As my first post in almost 2 years, I must express my shock at such a topic ever being thought up in the first place! Surely beer and chess go hand in hand like the cinema and popcorn, or restaurants and food?! On a more serious note however, I simply do not have the time to read all of this thread so have limited myself to pages 1 and 10 to get a rough idea of the argument, so perhaps I may say something which somebody else has already discussed, for which I apologise in advance!
With pubs being venues for a lot of clubs, it would be impossible to avoid beer. Even if the argument is one which is against beer breath, surely being in a pub the aroma of beer is going to be present. Unless the idea is to ban alcohol form pubs altogether?
Also, drawing on my own experiences back in 2002-2006, when I was 14-18 and therefore unable to drink alcohol but playing in a pub most matches, I never perceived alcohol to be a problem. My club captain who always gave me a lift to the venue as I was obviously unable to drive myself always bought me a pint of coke anyway, whilst the rest of the team enjoyed a beer with our opponents before the game started, and probably continued to consume 2/3 pints each during the rest of the evening (apart form the designated driver, of course!). I never saw any drunken behaviour that would bring the sport into disrepute, or give any parents reason for not allowing their child to be in that sort of atmosphere, or that put myself off.
When I turned 18 in 2006, I was delighted to be able to enjoy a beer or 6 with my opponents, and it helped me enjoy my chess more. Only once did I get drunk whilst playing chess, but it just so happened that my opponent was playing very slowly and England were on the big screen in the other room and as such I literally stood at the bar for most of the game, but thankfully after 5 pints in the first half my opponent offered me a draw to which I gladly accepted as I was almost at the slurred speech stage! My opponent was not put off by this, and admitted that he partially offered the draw because he was jealous and wanted to join me at the bar watching the match! However, I have refrained from doing that since, and stick to 2 pints maximum on the rare occasion that I play chess nowadays, as do the majority of chess players that I see.
I have to say beer breath has never been an issue for me, I have never been put off by it or even noticed it or had a complaint about my own. Beer sales are a vital income for venues for clubs, many players have just finished a hard day at work and won't be able to survive a hard match without a nice beer, and many of the older generation of players enjoy sampling different Real Ales at different venues they may travel to. If the players were limited to drinking these after the game only, can you imagine a pub in the middle of nowhere staying open after 11pm (or whenever the match might finish depending on time controls) just to sell a pint or two?
Obviously if a player is incredibly intoxicated and is causing a disruption to his opponent and those around him then penalties should incur, but if it is drunk and disorderly anyway it would be a Police matter... And as for noise - a lot of venues will have other events on at the same time in other rooms, noise is always present from outside, and as for pubs, there will always be loud drunken men in another room - so are you going to tell them to shush, tell birds and cars to be quieter, thunder to wait til after your match etc.?
Smoking is obviously not much of an issue as smoking in public places is banned, but when I was 14 our venue was full of the same 5/6 regulars (non-chess playing) who smoked like chimneys, and you could hardly see your pieces for the smoke, and my dad used to moan that I stank of cigarettes for a couple of days after, but it never put myself off.
A solution then, perhaps, for both noise and smell created potentially by alcohol - Ear plugs and a clothes peg. Can't imagine them costing an arm and a leg, tbh. You could even go the whole hog and imprint your clubs' logo onto these items for publicity if you so desired.
Just my 2 pence worth
To Drink or not to Drink, that is the question.
I Drink therefore I am.
I'm not as think as you drunk I am.