Won't help for this weekend, but you may want to pick up and install a couple of these:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
One for each hot leg.
I only have 30 Amp service in my ACE but that can easily be overloaded with 1 AC, the electric water heating element and anything else running at the same time like the refrig, microwave, or battery charger.