Aria would certainly be at the top of the list in terms of location, quality of accommodations and fun places to stay if you want a 2 BR suite. But, it will be expensive. Not sure what your budget is/how cost conscious you are. Cosmopolitan would be good for your age demo - don't know if any wrap around suites have 2 beds but you might try to get one of those for hanging out and then a lesser room or two where some of the crew just sleep. Vdara is in the same complex and will be cheaper but also pretty staid since no casino. 2 BR SkyLofts at MGM would be great but will be $2-3,000 a night and the technology is so outdated it undoes some of the cool factor.

Renting a car and doing a hike at Red Rocks or Valley of Fire (and Hoover Dam if there's any water left behind it) are good for a daytime activity - if you're not there in the hotter months. Golf of course. Pinball Museum for an hour or two.