What happens is that after getting your luggage you go to the Mears Ticket window (located at the Delta Luggage Pickup area) and get your shuttle tickets.
You then have to take an elevator down a level (this is from memory cause last year these changes took place) to where the shuttles are and give your ticket to a dispatcher. Then it's anywhere from 10-20 minutes till a shuttle comes. They group the hotels together. So say you'er staying at the BVW's then you'd be with Y&B, etc.
It's not a bad ride or deal as long as you're not in a "rush" and don't mind being with other people!