Coming to Mesa...in August?? In a 40ft 5th wheel? You are a glutton for punishment!! LOL And I live here!! So yes, I do know quite well what it is like.
Hope you have one, or even better...Two...good air conditioners.
You will need them both, 24/7.
Plenty of RV parks to choose from in Mesa. And yes, most will be a mix of park model and RV. It's just the way it is here. Keep in mind that almost all are also "over 55" restricted.
Check out The Resort. Or Valle Del Oro. Or Monte Vista.
All 3 are very nice parks. Nice amenities. Close to anything and everything you could want or need. Easy highway 60 access.
2017 Winnebago Spirit 25b