A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
If the award certificate is nontransferable, this would be fraud. Worst case would be you pay rack rate for the room and sibling has Hyatt account cancelled, losing all points.