I have been reading a lot of rv forums. We planned on staying in the Flagstaff KOA, but 90% of the forums say it is bad because it isn't level and it's too tough to navigate large travel trailers. We have a 30' TT, and don't want it hurt by trees. We've never been to this area, but will be staying 1 week with 5 kids and 2 dogs. Please advise: I've heard of J & H RV Park, Munds, Woody Mountain, GC Railway, and the KOA???