On the locked up brake check the rubber break line the swell up with age and won't let the fluid go back to the master cylinder there by locking up the brake. I blew two front tires because of this.
On my Wildcat the bedroom slide would creep out, I found solenoid valve top had worked loose, don't know if that is the proper term, mine was located in the lines from the pump, the top is black plastic and I tighten them, clockwise, by hand. Every once in a while it will creep out again while in storage, I run it in all the way then tighten up the valve. When it first happened I emailed Lippert and this is what the tech told me to do.
I also stayed at Leaf Verde RV Park in Buckeye, nice park for the winter. In talking with some of the folks that were permanent residence year around, they indicated they used 110 volt window air conditioner units, usually up to 3 in a 35ft FTW, because they were more efficient and cheaper to operate than the RV A/C. Talked to one guy who came in from Oregon in a TT and stayed last summer and he said it was BRUTAL, didn't know if his dog was going to survive, but they did.