Richard, I’m so glad you brought up the fact about heavy gauge wiring. Something as simple as an extension cord (shore line), can cause more headaches the one could troubleshoot. I have an event I might do this summer, and the folks that run it offer electricity, but suggest you bring a minimum of 100′ of extension cord. First thing that came to my head was voltage drop. ARGGGGHHHH…
Putting it layman’s terms, the thinner the wire, the more the voltage drop over a run, thus leading to a higher current draw. (Think resistance). So something that would normally draw 15 amps at 120 volts would draw over 20 amps when the voltage drops down to 105 volts (this is just a guesstimate, I didn’t get my calculator out to get the exact numbers, but you get the hint). But you want the heaviest duty cord you can get. Be it 10 gauge or whatever.