Most newer Motorhomes have a feature that automatically starts the genset if the power is cut off. After about 30 seconds, the air conditioning will kick back in.
In 31 years of camping, we've never stayed at a pet friendly park where we couldn't leave the dogs alone for a few hours. We leave our cell number with the park management just in case there are issues (like a power failure).
Quiet dogs are not a problem.
We leave the blinds closed and the TV on, and the Vortex vent fan running (to provide a bit more air circulation).
The key is to make sure that the management, and perhaps a neighboring camper knows how to reach you!!
