Jim -
Some other basics, since I love talking saltwater fishing and too cold to do any fishing here!
Backwater = the rivers, creeks, the Chesapeake and it's smaller bays, and the ICW (intercoastal waterway - area behind the ocean barrier islands - if you were to head to Sandbridge or OBX), etc. There is a ton of this water down there and excellent fishing.
Out front = the ocean itself.
Backwater is fished much like you would inland PA waters. Depending on what you are targeting, would really determine your gear. If you are looking for flounder, bluefish, smaller red fish (puppy drum), croakers, sea trout and other smaller fish, your regular "bass" rod, M weight 6'-7' rod is exactly what most will use. If going after the big redfish (bull drum), big cobia, smaller sharks, etc. you will use gear much more in the musky casting gear. Big sharks is its own special gear. They call them inshore rods/reels, only difference is possibly sealed ball bearings and other corrosion resistant components. Since you are hopefully not dunking your rods/reels in the water, you should be good with freshwater, as long as you give them a good rinse after every use. Do not spray hard or you can push sand/salt into the reels. Use a shower type spray or even hose without a nozzle, or just make sure you aren't jet spraying with a nozzle. If you are planning to do a good bit of saltwater fishing in the future, it is a good idea to possibly get some more saltwater rated equipment, but your regular freshwater is just fine.
The lures aren't all too different, but most salt lures will have more corrosion resistant hooks and other. I would highly recommend to not use any of your favorite freshwater lures unless the confidence level is so high and you are not worried about replacing when back home. You can definitely use your freshwater hooks, etc. Although bronze and other materials will only give you one use in salt (also depending on the salinity). The tidal rivers, 20 miles from the ocean are going to be far less salinity than the ocean itself and less corrosive. For all of my saltwater tackle, I put in small plastic bags (craft store sells the smaller ones which are easier to use than sandwich zip locks, but work). This will keep the corrosiveness on the items used and not spread in your box, which it will. Many freshwater hooks, no matter how much you clean after, will rust as soon as they get saltwater on them. I even separate into smaller boxes for my intent of use. This also has to do with me hiking a good bit when I fish salt (I don't trust trailering my boat that far). I'll grab 3-4 boxes and put in my wading bag. If one happens to go in the drink, hopefully the plastic bags the gear is in will protect them and other boxes are safe.
Saltwater fish seem to love shrimp. Which is good and bad. If you are trying to catch big fish with a big piece of shrimp, there are almost always smaller fish near by that don't mind pecking apart your shrimp before the big fish gets there. Smaller pieces of said shrimp on a smaller hook will catch those smaller fish. Which can be used for bait (check regulations before cutting up or using for bait). Shrimp also doesn't stay on the hook the best of all baits, so can end up using a bit more than you would like. Avoid the frozen "bait shrimp" and buy as fresh as possible. Even grocery store and take what you think you will need, keep it clean and you can cook what is left over...
No doubt other baits work better at times and depending what you are looking to catch. If going in October, nothing will likely beat mullet, which will likely be migrating and having the entire area on fire with fish. There are glass minnows/spearing/rain fish that look a lot like the emerald shiners in Erie. I don't hear of people using these as bait too often, but many lures are meant to imitate.
If you make it to VA Beach or other spots in the ocean, things will be a little different. You can definitely use those same techniques of the backwater "out front", if the ocean is 2' waves or lower. Most often, they are not. On a pier, that tackle will usually work. When the ocean is over 2' waves and often even when under 2', there is a long shore current or rip currents that make using those smaller inshore rods hard. Impossible if doing the "bait and wait" approach. For that you will need at least 8', surf rod. Again, depending on what you are targeting. If going for the smaller fish like croaker, flounder, bluefish, pompano, whiting, etc. 8' will work if lower waves. Often guys use 12' rods to get 3-4 oz of lead out to the second sandbar. This would snap most of my freshwater rods, which are strong enough to catch any of the fish, just not strong enough to get the bait out there.
If you plan to hit the beach, I could write another 2-3 pages. It is a bit more different than the backwater, which is much more similar to our freshwater fishing.
If I were to be heading to the area, here is what I would do.
1) Find a few local fishing forums (Facebook should have many) as well as bait shops that have reports/forums. Get a good idea of what seems to be showing up on the reports the most during that time frame you are planning to go. Head back a year in the reports. One of my biggest issues is going somewhere with a goal to catch a certain species and isn't really their season or conditions are not favorable. I may get 1-2, but end up passing up some other species that are much more available. This will give you a much better idea of what gear to have too. Casting Spanish mackerel lures at areas holding a ton of sheepshead will just make you frustrated watching others catch. Different than Erie sheepshead and prized food fish.
2) Scout using whatever satellite maps program (Google, MapQuest, etc.). Finding public access is often an issue, especially in those populated areas that someone usually owns just about every piece of land. Finding where creeks enter a main body, fishing piers, jetties, etc. Often the satellite views will show what it deeper water being darker, near shallower feeding flats. Often right on those transitions will hold fish.
3) Read up on how the tides and winds effect where you plan to fish. With tides, incoming tide pushes baitfish and others into shallower areas that will get deeper. So smaller creeks, etc. the fish are goin in. When the tide is pushing out, this will pull that bait out into the main area. In larger areas, it does different things. Some beaches are much better fishing at low tide where you can reach deeper water. Other beaches high tide is key to put enough water on top of a sandbar or grass flat that turns them into smorgasbords for fish feeding on the crabs, etc. Wind directions, especially in the ocean are huge. Lighter winds are usually better, since stronger winds can make things almost impossible to fish. A lighter wind from the E (in VA Beach and other east facing beaches) will often make the ocean clearer, which has certain fish feeding more (Spanish mackerel, bluefish and pompano). W or SW winds will dirty up the water, which also stirs up the organisms that live in the bottom. This makes fishing for flounder, croakers, whiting and others a bit better.
4) General stuff. If fishing the summer, most fish will be caught in the dusk and dawn hours. Which works good for families showing up to swim and enjoy the beach. Other seasons the fish are out during the day much more and usually less families. Know that sharks will be around more in that dusk, dawn and night hours, although always around. If the ocean is murky, has a good bit of baitfish and low light, it is not a good time to go for a swim. Fishing the beach in the ocean during the day is also looking for some conflicts with families/swimmers. If the beach starts to get crowded a morning that you are fishing, you're going to have to pack it up unless you are ready to have a conflict with someone. No fish is really worth accidentally snagging a little kid... If a beach has plenty of room for both swimmers and fishermen, then be respectful with having your line under control (not best time to have 3 rod spread) Targeting sharks at swimming beaches is something that many have issues with. Bleeding fish or gutting them on those beaches is also something many don't take kind to. For bleeding fish, take a bucket, bleed them in the bucket, make a hole in the sand, dump and cover, problem solved.