Try it at home. I have tried mine on 15amp outside plug and 20amp inside the garage. I can run the AC no problem on 20amp. I could start the fan on 15amp but not always the AC's compressor; maybe it would have worked by turning off the converter's breakers selectively.
For a 1-2 night stay you could probably turn off the breakers for battery recharge,water pump,water heater,fridge when using the AC. For a long stay it would be a bother but better than using a generator or not having AC.
Also there is never a guarantee. My wife was camping with 30amps a few weeks ago on a cold night. She started using the <15amp electric heater and campground's breaker tripped. Nobody to contact at night so it ended up being heated by propane.