Let's shoot for a 7 PM start time for the party - sound good?
Bell - just grab your luggage & look for the taxi line - hop in a cab & ask them to take you to the Venetian
Hotels? I'd start calling around now. Within decent walking distance of the Venetian you have:
Harrah's
Treasure Island (or "TI" as they like to be referred to as now)
Imperial Palace
Mirage
& yes, there are bathrooms all over the place