http://www.nps.gov/grsm/planyourvisit/frontcountry-camping.htm
here is a link to the smokies campgrounds. we stayed in elkmont over the fourth almost 2 yrs ago. that was the year we drove from there to ohio and bought our "c".
it is a very nice campground but no electric. they do allow generators and those with campers had them and used them. we didn't have one and really didn't need one. but, that's just us.
if you go to elkmonts map you will see the campground layout. the river flows all around it and kids are floating in it on tubes. a lot people are fishing in the river too.
oh, and don't leave your dogs unattended in your camper. we got a note about that one.
we were in pf for a few days before that and stayed at the koa right down the road from dollywood. it was a nice campground. we took the trolley and rode around town. but, we really didn't do anything in pf.
i like to go into gatlinburg and walk around that town. not sure why i prefer that town. it is still touristy, maybe not as much, though.
the smokies are nice. if you take your bikes you can go to cades cove early in the morning and bike it. or wait until they open the road and drive through the loop. there are old homes, a mill, visitor center and you can normally see bear on the loop. it is really neat. but, again it is a national park.