Eudico holds her liquor well and knows her limit. A little more rambunctious than usual, or absolutely miserable when drunk, depending on the mood. I'd imagine that she's the former right after you take down the Profit-Taker, and the latter when she remembers Deck 12. When her spirits are up, she'll be belly laughing and letting loose and she absolutely deserves all that alcohol-addled joy. Usually ends up helping Ticker take care of those who are too drunk to even walk when her head is clear enough.
Ticker, ray of sunshine that she is, is the mother hen when drinking with a group. She's the one who makes sure that nobody throws up all over their rigs or trips over equipment (while giving words of encouragement like "You'll be fine, love."), and never allows herself to become too drunk. Usually the designated drunk driver, or in their case, designated drunk chaperone, hauling everyone's asses back to their racks, because they have no use for vehicles in Fortuna. On the rare instance that she drinks to her limit when she's alone in her apartment, you can hear quiet sobs through the walls, thoughts of her former lover and the unfortunate ones she failed to save flying through her consciousness. Not a soul spoke of it.
Don't let Zuud drink too much when Chatter is being troublesome. Just don't. Profanity will flow from her mouth like coolant gushing from a broken pipe; she will put the Rude in Rude Zuud. Her arguments with Chatter are taken up to eleven when she had too much. Bottles and mugs will fly when it has gotten out of hand. Alcohol isn't really healthy for her mental state, so someone, usually Ticker or Eudico, keeps her in check whenever they're out for drinks. When the alcohol hits and Chatter is quiet, however, she can be mellow. She'll grumble and lean into someone for support, again, usually Ticker or Eudico. Tends to sleep halfway through the night because of her age.
Smokefinger is possibly the most refined among them in terms of choosing what to drink, and he has excellent taste. He becomes chattier when he's had a drink or two, endlessly rambling about minerals or his past work. Generally a happy drunk and the apples of his cheeks get very bright. Like Zuud, he ends up napping halfway through the drinking session due to his age and unawareness of how much he had drank while going on his intellectual tirades.
Legs, oh baby. After just one drink, he's already happily drunk, not quite used to the alcohol. His rig helps his constitution a little bit, but he still manages to fumble around, requiring help to get back up. His rhymes are thankfully still on point, and it had been an amusing memory for everyone to watch him rhyme about needing help while making futile attempts to get off the ground, and Little Duck has that on tape. All is fun until he starts speaking about his folks again, how he misses them, and so forth. At that point, Ticker or Biz takes him back to his rack and tucks him in. Poor kid deserved that drink, and more.
Biz, by the Void- he'll gulp down everything you give him and still manages to stay sober. Ale? Easy. Wine? Chekchek. Ganymede Geyser Water? No problem! Everyone could be sleeping the drink off and he's still lucid. The man has the constitution of a damn kubrodon. When he finally manages to get drunk, Little Duck's comment about him going soft is truer than ever. If he's fond of you, he'll pick you up and give you a bear hug with his big arms. He'll talk to the Virminks he hasn't released yet and gently cuddles them and calls them ridiculous pet names. Little Duck has a video of that as well, but don't let him know. Good luck getting him back to his rack on the rare occasion that he passes out. It took more than the combined effort of Eudico, Ticker and a few workers the last time.
Little Duck is smart; she never lets her guard down though she trusted most of the people she's with, and she has dirt on everyone. She wants to stay sharp, so she usually drinks little to none at all. It's a habit she developed from being a rail agent. When she does take a sip, she drinks her hard liquor straight, with zero chasers, a habit she picked up from Biz many years ago when she's still under his wing. And speaking of Biz, she usually tries to win drinking contests against him, but always loses as soon as she's aware that she's nearing her limit. It seems she will not surpass him in that particular area. Legs will attempt it as well, but Little Duck will be quick to shut him down and she will bring up that video of him on the ground. It works every single time. Oh, and Little Duck is the type of person who will rather watch you stumble around drunk than lend a hand; she finds it amusing.
Bonus: Roky and Boon tried to smuggle alcohol in the vents once out of their childish curiosity. Biz caught them, confiscated the alcohol, and ended up giving the supply to Eudico. They cracked them open after Thursby got repo'ed and became Legs.