James, I wish you all the best
I remember well how exciting this can be (especially for the kids). This is something they will remember for awhile - or at least until you trump it by setting up in the driveway for their first night. What a hoot!!
Regarding your power question. The Roo's A/C system is 30amp and controlled with a wfco 55amp converter.
Plugged into a dedicated 30amp receptacle... IIRC the AC takes about 16amps on start-up and 13 to run. The microwave is 8-13amps. Of course, you will also have the converter, some lights and fridge but those should not be a problem. However, it could be a problem if you also are running the hot water heater on electric and the converter is trying to charge low batteries.
Plugged into a 110VAC (20 or 15 amp) house type outlet with an adapter may or may not trip a breaker as soon as you turn on the air conditioning.
15amp will not run the AC. 20amp should (depends if you have a very long extension), but not both AC and micro at the same time.
Hope this helps.