Agree with the earlier posters. We have an adapter that pulls from two of the RV outlets, combines and provides 50amps from a only 30 amp location. Cost vary from about $70 to $500 depending on all of the features.
Good luck,
I have 50 amp in my rig and dont think I've ever had a site with 50 amp more than once or twice.
30 amp is fine. I've ran two ac's at one time with the fridge on electric.
I run one AC unit, the fridge, hot water tank, and lights without tripping anything. When using the micro wave I just shut the water tank off.