The PUB is one of these places that's really fancy, yet decorated up to be pretend-divey. They pull it off nicely, and you actually feel pretty cool for hanging out in this place. I went on a Monday evening and it was pretty crowded, so I'm sure it's jammed on weekends.
The beer is the main attraction here - excellent selection all day, every day, but you really want to be here late night Tuesdays for 5 cent PBRs or any day for happy hour (4-6), when all drafts, wines, and well drinks are 50% off. Yes, that's right, 50% off! That's a good happy hour at any place, but especially at one located within Crystals, or, as I like to call it, the Rodeo Drive of Las Vegas.
Aside from that, they go for upscale pub fare - fish & chips, sandwiches, pot pies, etc. Their specialty is the 'carvery,' where you order a meat (1/2 or full pound), a bread, and some sauces to make your own rustic-style sandwich. Among my group we had the grilled bologna sandwich, the fish & chips, and the corned beef. All were excellent, although highly priced ($20 for fish & chips).
Service was good, and they found us a table in the corner so we could have a little bit more room for the Baby.
Overall, this is definitely a place to bring visitors, but I wouldn't come back on my own unless it were happy hour.