Moderator, Marriott Bonvoy & FlyerTalk Evangelist
Join Date: Oct 2002
Location: McKinney, TX, USA
Programs: United Silver; AA Plat/2MM; Marriott LT Titanium; Hilton Gold
Posts: 11,773
When I am in doubt about the use of a reservation code, I usually contact the hotel directly. They can usually tell you if there will be any issues with you using a code.