I'm honestly trying to be helpful here, but I 100% guarantee you there will be a spill of some kind.
I spent a fair bit of time at the end of the event mopping the floor, and I know a couple of people used the mop before me. Bare floors really are best for this kind of event, nobody wants to spill, but accidents happen when you're bringing 100's of gallons of water in and out of an event. Hell Poseidon even tried to collapse his table lol