I would highly suggest staying down on the other end of PF as opposed to River Plantation end. Traffic getting down to dollywood and dixie stampede is not fun that time of the year.
Have stayed Pine Mountain several times. A little pricey but very nice facilities, AWESOME bathhouse. Indoor pool across the street at the hotel, and you are very short distance from dollywood.
Anchor down is a premium resort, and is probably a good 30 min away with good traffic from everything in PF. It is in Dandridge (just up the road). It is a beautiful location and right on the lake. Not a lot of shade due to it being so new.
Have also stayed at Riverbend Campground numerous times, but no pool. They do have the river that wraps around the campground though. Great rates as well.
It is going to be HOT, so try to find a site with some shade.
