I am taking my newly 21 year old brother-in-law to Vegas in mid-May this year and currently have a room at The Mirage. It is likely that we will spend quite a bit of time at the pool. That said, I have always been intrigued by Mandalay Bay and the pool there. Any thoughts on this? I like The Mirage because of the location and have stayed there before and really enjoyed it. However, I could be swayed to switch to Mandalay Bay if opinions here are in favor of it. Thanks!