[sourdough]

I don't know if the 25res is 30 or 50A. I do know that we were recently looking at RVs and some of them in that size range had the option of 30 or 50A service depending, I imagine, on the 2nd AC. If you go to the gulf coast I would strongly urge you to get 2 ACs. That's a 30' trailer you will be trying to cool with one AC.

I would also look for 50A sites just to make sure you would be comfortable. If not, the 30A would probably work rotating the ACs depending on where you were in the trailer. Having both would give you the option of being as cool as you want (hopefully), or, if you have to use the 30A, just use a 50/30 dogbone and get by with what you have. You would then have the option of using 50A sites wherever you went to take advantage of the 2 ACs.