Does anyone know or have thoughts on the "real" methodology used to determine room upgrades? I know it says based upon availability at check in, but what if you are a platinum member and you are arriving later that day? Does that mean all the gold members get upgrades before you? I'm just wondering if they might look at their members checking in and auto upgrade them in their system so that platinum members get upgraded before other members. Seems like they would want to reward their most loyal members first. Does anyone know how they "really" upgrade?