I don’t know where some people in this thread do their gambling, but the drinks I get in Las Vegas are the same as if I ordered them in a bar elsewhere. I am a low level (and very occasional) gambler - $0.25 video poker or $5 Pai Gow - and I get top shelf vodka or scotch every time - I just ask for it and they bring it to me, no questions asked. I don’t do mixers, so I know that I am getting what I ask for. I haven’t asked for a Courvoisier (yet) but I have recieved Grey Goose and Dewars on request.
Hmm. I’ve always been offered drinks within a few minutes of sitting down to play in Vegas, and I can’t recall them ever being weak or watery. They may not have been the best booze - my vodka and Diet Coke usually has the trademark rasp of Popov or Vladimir or whatever cheap-ass rotgut is in the well, but what possible motive would they have for skimping on something they get for so cheap in the first place? I mean, if I can get a fifth of shitty rum or vodka for $10, how cheap must a casino get it, when they buy it by the pallet?
For mixed drinks, sure. But for Maker’s neat, it doesn’t matter. 
The terrifying flip side of this is at Mystic Lake casino just south of the Twin Cities where there is no alcohol available anywhere. :eek:
I’ve noticed that the drinks in Vegas contain a LOT of ice-the contain a shot of liquor, but damn little else. I think the casinos think you will get more reckless, the more you drink-so stiff (albeit small volume) drinks are what the house likes to serve.
This is getting away from the spirit of the OP, but my couple times in Reno we played Pai Gow. It’s some of the better odds around, so you lose slowly (The House always wins 
) $1 and $2 I think it was. Nothing high roller, but it was a table game instead of slots. You spend a couple hours losing 2 or 3 hundred dollars (that you budgeted to lose anyways), you get beers often enough to get a nice buzz, we met countless many nice people as they came and went, the game is fun and you always have that chance to hit the big hand. Plus scantily-clad babes bringing the drinks. Good times.
Why don’t they have waiters in Speedos for the ladies?