We have been to PUB a couple of times now. On both occasions we have eaten and also taken on the 7 second beer challenge.
The beer challenge is a lot of fun - you used to be able to select form any beer on the - very extensive menu - but now you are limited by price to only certain beers - and you have 7 seconds to down your pint. If you succeed you get the beer for free (limit of two) if not, you have to pay for it.
I would recommend that you pick a less gassy beer (my favorite is Boddington's, very smooth).
As for the food, we have tried 5 or 6 of the entrees (as our last visit was in a large group) and it really wasn't that great - sometimes it has been the flavors, sometimes the "secret" ingredients that aren't listed on the menu but come as garnishes on the plate.
Their fries are pretty good (sweet, steak and frites) so I would say get a side of those.
The food prices are a few bucks more than I think are reasonable and on any future visits I think we will stick to just some drinks and eat elsewhere.
I suppose it is just our taste in food as we ate at Todd English's "Olive" in Bellagio on a previous trip and didn't much care for that either.