Join Date: May 1998
Location: Reno, NV (RNO)
Programs: AA LT Platinum, AS, UA Premier Silver, DL, HHonors Gold, Marriott LT Titanium, Hyatt, IHG Platinum
Posts: 4,723
It's the same thing the hotels do with the 50% off certificates you receive when you claim free airline tickets. They only apply to full rack rates and you can ususally find a better deal with the discount rates. You almost never save 50%.