hi all I'll be visiting in November during thanksgiving with 12 friends - I've booked 3 double rooms (stoked for the extra night credit

heh). I'm curious what makes this Westin arguably the best one in the world?
Also does this property check ID for corporate codes? I've never been asked in the US and want to know if I need to bring ID. The last I want is to arrive with my party and get denied on our $310 a night rate...