Thanks for the thoughts and info.
Yes, I've just arrived tonight at a reputable RV outfit that will be on the job in the morning but I like to be as knowledgeable as possible when I start talking to them.
One breaker is designated for Appliances. Other breakers include one for microwave, 1 each for the A/Cs, 1 for portable appliances, 2 for receptacles. Looks like one is not designated, after accounting for the Main switch.
Will post followup.