I never stayed at the icon, but the JW is definitely nice! The location is unbeatable. The JW was a cat 4 for a while, but I think just got bumped back to a 5. If your staying for only 1 night and the wedding is downtown, that would be my choice, especially if your drinking. I disagree with the no traffic, it can really build up around the galleria area and the freeways even build up too. I was in Houston a few weeks ago and 59 was backed up on saturday afternoon and the gulf freeway is a permenant disaster 7 days a week.