I have a reservation for an RV site over labor day weekend, from Aug 29 to Labor day. I just got a message my son and family (wife & 3 Kids) might be coming for a visit. Is a tent allowed on the site too?

I believe it would be a small fee to add a tent to your site. But yeah, like the others suggested, I would call the campground. I found that the staff there were very friendly and helpful.

I think you can but I would call too check

For that question I would call the campground