Orchid,
That's great in theory however Phyllis, wife's buddy, misses every shuttle in each direction, especially after I give her and my wife Sam's Town free drink coupons. Then as I lay down for an afternoon nap at the Mirage they call me to "run by" ST and pick them up. A guy or one of my kids would have to wait for the next shuttle but of course not my wife and Phyllis.
Do you know how long it takes to walk from a Mirage room to the parking deck, drive to ST, back to Harrah's to drop off Phyllis, drive to Mirage deck then walk back to my room? That why I don't like to rent a car when I'm in town with a group.