I had no issues with power last year but I'm an EZ UP guy who needs just enough for a string of lights, tunes and electric knife.
I Did have to use a Sam's basket to haul water from the backside of the store.
Depending on how its set up, you don't want to be on the outside closest to the parking area where everyone walking to Sams on Saturday seems to show up during turn in time to find out what in tarnation is going on and if they can have a taste...
I'll be arriving Friday AM as well, looking forward to meeting some of you folks from, well, "up North".