I'm sitting on my 50 amp RV hooked up to 30 amps right now. Temps are in the mid 90s so air conditioning is a must. We just go into active energy management mode. If the air conditioning is running and we need to use another high draw item like a toaster oven, we shut off the air until after we are done. Same in the winter time when using electric heat. Works quite well and I can't remember the last time I popped the pedestal breaker.
When we decided to swap out the old convection microwave, I purchased an inverter microwave for just these situations. Regular microwaves run at full wattage regardless of what percentage of power you set it at. They just cycle off and on. Inverter microwaves actually run at reduced wattage - setting the power level to 50% has a 1000 watt microwave running at 500 watts. Now when we need to heat something up on a hot day in a 30amp campsite, we no longer need to turn off the air conditioner, we just run the microwave at reduced power. Just takes a little longer to cook.
Tom M. 1998 Safari Serengeti 3706,
300HP Cat 3126 Allison 3060, 600 watts of Solar.
Fisher and Paykel Residential refrigerator