Camp Dearborn is fine, don't worry. We stayed there last Memorial weekend, no issues at all. It's just like any other park, it all depends on your attitude and the random neighbors you get. There is a large middle eastern population that attends this campground. As a generalization, they have large families and speak loudly. This can be a shock to some that are used to different populations.
Bring your bikes. There are absolutely wonderful biking trials that connect for miles. Camp Dearborn connects directly to the trails. There are beautiful paved trails, you could go for miles if you're so inclined.
Be sure to stop by Kensington metropark (if you don't ride your bike there). I see more wildlife on a daily basis at Kensington than I do in the Smokies.