It's a bit unrealistic to expect every park should cater to every size and type of RV. Conversely, the park staff should be aware of tight turns, and not send a customer blindly down a road they're going to have trouble navigating.
I like a well treed site, and also my dislike of reservations has meant i've been stuck with less than optimal sites to get into, like a site with trees only 8ft apart, so you must thread the needle backing in.
Only once did I give up on a less than ideal site. It was heavily treed and on a steep downhill grade. I had to turn sharply and also accelerate backwards up the hill. After trying for half an hour, I asked for a refund and found a different park.
I have hit trees before while landing, luckily without damage so far. Never would I blame the park for a tree, or for any damage that might happen (not that the State or Federals would accept liability anyways.) I have insurance for such events should I need it.