Mandarin Oriental
The bigger the project, the more crucial it is to bring in the foremost experts in the field -- if a comet's hurtling toward Earth, you'd better bring in Bruce Willis, unless of course you look out your window and say, "Oh, there's Jon Favreau wiping slime off day-old pastries". Bringing in the big guns, the Mandarin Oriental Las Vegas.
To recharge from all the eating, drinking, and elevator-riding, head to the dual-level, 1930s Shanghai-inspired spa, with 17 couples-friendly treatment rooms, and a co-ed, Ottoman-style "Hammam" -- in which even the fattest can become Swingers.

