I have their number programed into my cell. From the gate at
Disneyland I call them and let them know I want to put my name on the waiting list. They then tell me how long the wait is. It takes about 10-15 minutes to walk Disneyland at the end of the day and with small children. When we get there it takes no more thna 2-3 minutes waiting in the area.
This also works with their take out. Just call and then pick up on your way back to the hotel.
I have not heard of Mimi's delivering to any of the hotels. I have not stayed at the Fairfield though.