The Hostile Grape is inside the M Resort, which is off the strip as far south as you can get without leaving town. The place has a wine cellar vibe on approach as you walk down a couple sets of stairs. As you walk in you feel right at ease. Great low lighting to set the mood. Cool mix of jazz and electronica at a volumes conducive to conversation. I'm not a wine expert but figured I would check it out. Hundreds of wines to choose from either by the bottle or the glass. Grab a seat at the bar or get a prepaid card. With the card you can go around to a couple dozen wine tasting stations and have at it. I got a single glass of white somethingorother for $10. There is also a wide selection of beer and cocktails.
I can see this place as a rendezvous point to start or end the night. When I was there post midnight on a Friday there were a few groups but no major crowd. Bartender said it's crowded earlier in the evening. The Hostile Grape closes at 2 on the weekends, earlier other days. In a 24 hour town that's actually refreshing. Only beef is that being somewhat subterranean, I got no cell phone service.