MGM has a free self parking garage, but it is a distant (several hundred yards) walk from the hotel entrance. Sane people use the free valet parking. When you check in, tell the valet your last name. He will give you a valet ticket and call the bellhop for you. (As the valet ticket says, Don't Lose This Ticket.) The bellhop will arrive with a luggage cart. Tip the bellhop $5 (or $1/bag whichever is greater). He will give you a baggage receipt. When you get to your room, call the bell desk and a different bellhop will deliver your bags. Tip this bellhop another $5.

When you need to drive somewhere, turn in your valet ticket at the valet desk, you will be given the bottom half of the ticket. Give this receipt and a $1 tip to the valet. When you return, give your last name to the valet and you will be given another valet ticket.

When checking out, call the bell desk and have a bellhop sent up, you will be doing the same thing in reverse. Tip him $5, then go downstairs and give both the valet and baggage tickets to the valet desk. Your car and bags will appear, give the bellhop $5 and the valet $1. You're on your way!