Valet on the south end of the hotel.
Ground level parking lot across from the north end of the Cal.
Parking structure at the north end of MSS. Parking structure is free, but a bit tight on the parking spaces.
Ground lot is free if the gate is up, otherwise if there is an attendant, you pay and get a refund at the casino cage. Cage is next door to the buffet.
MSS isn't that big and the walk from any of those isn't far. I guess the shortest would be from valet, but really we're only talking a couple of hundred feet more from the other two options. Surface lot, you cross the street at the intersection and right into the side doors. Parking structure, you'll most likely end up taking an elevator down and then walk across the hotel check-in parking lot.
EDIT: Just be aware the MSS buffet doesn't open until 7 AM.
Last edited by Joe; 08-23-2012 at 09:51 AM.
No longer living in Vegas
Giving Plaza a try