There are actually two locations of The Club at LAS: the larger one at Terminal 3 at the end of the E gates and a smaller facility at Terminal 1 near the D gates. If you have time, skip the one near the D gates. It's kind of a joke if you've ever been in any other airport lounge.
Yes, there's a full bar and some snacks but no bathroom or anything substantial to eat (unless you consider four flavors of popcorn and Cup of Noodles substantial). It's also not very comfortable. I was admonished by an employee for using a empty seat as a foot rest. He wasn't exactly rude about it, but I thought it was a little silly because I was the only person in the lounge and none of the furniture was very posh or cozy. It's only a bit nicer than IKEA.
I definitely prefer the the larger facility. There's more lounge chairs, a few foot stools and heartier food like soup and sandwiches. I also spotted a shower in the men's room. For some reason, they even gave me a free gift (a portable charger) when I checked in.
Because of the limited food and drink options, as well as a few dour employees, I wouldn't recommend either facility for the $35 access fee when compared to other airport lounges I've visited. However, if you already have procured access, I would definitely check out the larger facility near gate E2 but skip the one at the D gates. You might be spoken to like a child when you attempt to get comfortable.