Here are some of our nessacities of camping.
Foam mattress topper, not a thick one unless you have the room. Tons of blankets/comforters/sleeping bags/sheets
A good tarp or two
If you want lights, go out and buy one of those outdoor extension stakes, ones with the timer on top that turn on at dusk. I bought one for my christmas lights last year, and use it every trip. plus a good heavy duty extension cord.
For the summer months, bring a window shaker aka AC. We have a 5,000 btu unit that props up nicely on our tailgate and blows right into the tent for a wonderful night sleep.
For the somewhat winter months (Dec-Feb) use an electric blanket. It might not be cold enough to use it all night, but the blankets do feel a bit damp when you get back at night. And not all of us have 2$ to waste on the dryers. Or want to spend the time there at night.
Flashlights are good also for the trek through the loops at night.
Don't forget the OFF!. You never want to wake up in the morning with bites all over. You could also bring the candles and such, but I don't think the tiki torches are allowed. Or just plug in a bug zapper.
Keep the tent closed as much as possible, you don't need buggies crawling on you at night.
Unless you plan on spending your first day there at the site, set up your tent before you leave. It was more than a laugh watching Kari put up a brand new 5-6 person tent the day we got there. I know it never fits back into that pretty little carry thing like they think it does, but it's better to know what you are doing before you leave so you don't spend all day there.
Place the tarp on the edge of the driveway, and then just underneath the tent to help keep the dirt out, and always take your shoes off before you get in. We usually place the second tarp on top of the tent to help block the sun in the morning, we are not morning people. And when we use the AC we place it over the front, using a bungie cord. Kinda like this
http://artpad.art.com/gallery/?iqqkenn1jw0
And helps keep out any rain. Our first time it poured in the middle of the day and spent all night trying to dry the first few layers of blankets. All on two dollars. Because our tent wasn't very good. Now I hope this new tent will keep the rain out like it should.
Scooters. It's always nice when trying to get to the comfort station in the morning when you really gotta go. Unless you're going to be there at least a week, you probably won't need bikes. But they are nice if you plan on having time for exploring or doing FW stuff. We're always too busy with the parks to do that sort of thing.
That's our major list, and of course clothes and shower stuff.