I second the advice to call the resort before doing this. It sounds to me like a fire hazard, with all of the wood within WL's structure. Having nearly lost my boyhood home to a fire caused by an electrical short, I'm particularly sensitive to power outlets and cords not being used in the exact way they're intended to be used. I've stayed there twice, but I don't remember there being outdoor-rated outlets being placed on the balconies to plug things into. Is it really worth the substantial risk to leave that stuff plugged in, especially if you're at the parks most of the day, anyway? I'd definitely call them before transporting a bunch of lights down there.