We stayed in site #552 (in the 1600s last time). It's a nice site but they're kinda close together. My first choice of sites would be in the 1600s, 1700s, 1800s or 1900s. They're spaced out a little, just not as close to the dock, the restaurant and the tavern. These are all pet loops, 100s and 200s are not pet loops but I don't know about the rest. It's a short walk to a bus stop or easy bike ride to the restaurant from anywhere in the park.
All sites are full hook-up with cable TV, fairly level and mostly shady.
These are sites 552 (left) and 550, right behind them and across the road is a fairly nice fenced dog park.
FYI If you're using a GPS, it may try to take you to Wilderness Lodge (mine did anyway), just remember to follow the signs. Right after you go through the big gate to the Magic Kingdom, you'll be turning right in a couple of hundred yards.
Everybody should see the fireworks at the castle but you can get a pretty good view of them from the beach at the campground. If you want a seat, go early.
Site #552, the awning side was not to close to the neighbors but the folks on the site to the right were right up against our RV.
The best place I know of to get information about Disney is mousesavers.com. The only place to get any discounted tickets is undercovertourist.com and don't expect too much of a discount.
Here's some videos of some of the campground:
I didn't have time for a lot of pictures but the videos give you the idea, they're just kinda jerky. This is also not nearly all of the campground, it's to big to cover without a lot of time. One more tip, skip Universal. It's not worth the time and money plus the folks at Disney go out of their way to be nice to you, not so much at the other park.