Hi there!
Most of the articles I've read here on drinking "regular fluids" usually requires the de-bucket or the use of a Camel Pack.
However when it comes to alcohol your in a whole different situation and honestly can't/ wouldn't recommend doing it.
I am, by no means trying to be a party pooper but honestly wouldn't recommend drinking too much whilst in uniform as your safety is involved.
Here are my reasons why:
1) Ever drank alcohol in a hot tub? - the heat from the armor makes you sweat dehydrating you, the alcohol even more so creating heat fatigue and one heck of headache.
2. Don't break the seal - going to the bathroom frequently could become frustrating and requires more coordination the more you drink.
3. Rough housing - people who have had a few drinks start to think your armor is real. Vern TK 2392 Bondservnt wrote a thread on here about a trooper getting clocked at a bar while wearing his helmet with a not so pretty outcome.
Again, I just want everyone to be safe and enjoy themselves responsibly, so if I may, I would like to recommend a few suggestions:
1. Keep the bucket off and only put it on for pictures. This serves a few purposes - help reduce over heating and that there is human being in the armor.
2. Prior to party eat lots to help keep you fueled and absorb some of the fun you will be drinking.
3. Hydrate - for every alcoholic drink you have drink one 500ml bottle of water.
4. When people start to stagger/slur - go take your armor off and get into something more comfortable and enjoy yourself sweat free and happy knowing you don't have to take your armor off "gooned" and that your armor is safe from vomit, breakage, and other accidents.
Cheers mate, have a stellar time, and if you follow the guidelines you should be able to manage a happy buzz with minimal chance for incidents.
Happy holidays and be safe fellow trooper!