Join Date: Apr 2009
Location: Bye Delta
Programs: AA EXP, UA Silver, HH Diamond, IHG Plat, Hyatt Plat, Marriott Titanium, Nat'l EE, Avis PC, Hertz PC
Posts: 16,635
I don't think you have to do it in advance... they're always playing a recorded message about it at the gates. But it helps to have everything squared away in advance, especially if it is int'l and there are fees involved.