Mmmm...I don’t ever camp “just off 84”, so I am not sure about it, but not TOO far off of 84 (4-5 miles driving I would say) in Bristol, CT there is Bear Creek campground (between Waterbury and Hartford). It is associated with Lake Compounce amusement park. Has been there for 3 or 4 years maybe. Never stayed, and don’t know much about it except that I think it is all pull throughs. Not sure if it is full hook ups or just w/e with dump out station. I have caught glimpses of it when going to the amusement park. Mainly there to get people to come and stay to go to park, but may work as a stop over for the night. Google Bear Creek Campground Bristol and you’ll get to the website. Safe travels!