You can't be R-Bar on a beautiful Arizona night (not the hot kind, the beautiful spring and fall kind).
The Camelback Inn recently modeled this place and Wow! Its absolutely gorgeous and everything you want. Lots of space, plenty of oversized furniture, fire pits, twinkle lights, water features and live music all against the background of the mountains. You'll pay for it with cocktails averaging $14, but its so worth it.
My husband and I (late 20s) love coming here for a nightcap after dinner. We just sit and listen to the live music and enjoy the beautiful Arizona nights. We love walking through the property and sitting in the secluded Adirondack chairs and enjoying our drinks. It doesn't get better than this on a nice night.
We were hesitant to try - thought it would be an older, stuffy crowd but its not at all. Its very laid back with the music of visitors/guests and locals.