Just got back from Vegas (than had to fly to Tempe) last week. Pretty crowded, to my surprise. Lot's of BB'er and lots of fitness type people. Extremely body conscious there. See a lot of MLTF in the bigger casino's close to perfect 10's. Notice more Asian, Europeans & Mid-Eastern's than usual (Euro stronger, at the moment...but maybe not for long.).
Never want for a place to workout at, from hard core to small health clubs. Check out the Hard Rock (off the strip) for anything you want. Room rate have dropped a bit there and about anywhere else. Spend time at their pool(s), will never regret that time, believe me. Little far out but the Red Rock is a great newer place.
Can get's to 118/120, and above, during summer. Somewhat chilly and windy when I was there last wednsday & thursday. Always worth it to take a couple days for Vegas.