This is a huge place, with lots to do.  Not a good place if you're looking for a low key, quiet, simple camping experience.  There's a water park here as well, currently closed for renovations but apparently opening soon (and apparently water park fees are rising from $17 to $23, not sure).

The campground is broken down into a bunch of different camping loops, each with different amenities and vibe. 

There's a market here with basic fun camping supplies, as well as a propane tank to refill your RV tanks.  Price of propane is high here, but really there aren't many options in the area (there's a Corner Market down the road with very slightly lower prices).

The lake itself is beautiful and right in the middle of the entire recreation area. I believe boating and fishing is allowed but swimming is not - double check that info if that's important to you.

Good cell service here at the park but the entire area is iffy and you're driving around so heads up on that.