This is really interesting. I can see why the Super Bowl would be a spike, but the Monday after seems strange. If anything, I'd expect it to be even lower than an average Monday, because so many people just went out the night before? Maybe it was a fluke, several years running. Do you compare tips with other dancers, and find they have a similar Superbowl Monday experience? Likely they aren't keeping such careful records. Fingers crossed you have a great night tonight!

Stain fighting toothpaste has worked for me to get some difficult stains off my hands.

Tarps are meant to keep water out. They are not the best for keeping it in. You could get a pond liner, but like another poster mentioned, by the time you buy some materials, you could have just bought a cheap one. Chanel your desire to build with pallets into making a deck around one of the inflatable ones or something.