Not sure how big your rig is. We are in a 36' M, two slides. We were in Nauvoo in 2003, so our info may be a little old. The private RV park is OK, looked crowded and tight, but occupied by nice rigs, not a rundown sort of place. The state park is where we stayed; it was OK, but we were really tight in the trees there!! It was tough snaking through to our site. I think TL rating shows the sites to be 8 ft. wide - believe it!! We did get our two slides out. Call the state park and ask very complete questions about the site you want.
On the road to adventure!
Art & Carol Haenig