I think if this topic had been framed as a writing resource for people who for cultural/personal/health reasons have to abstain from alcohol, but want to include drinking in their works in an accurate way, it might be a little more productive.
From that perspective:
For people curious about different hangovers, it's absolutely true. Most people, if they drink frequently, socially, or otherwise, usually learn how they personally react to certain things (my brother has issues with beer, it makes it harder for him to bounce back the next day as opposed to say, hard liquor, for example). Usually your safest bet to avoid a really terrible hangover is to avoid mixing your poisons (ie, if you stick to one kind of liquor, you might get a bad hangover if you drink enough of it, but you'll get a way worse one if you combine beer, wine, and cocktails in one night). Personally my worst hangover ever came on a new years day, after I'd gone bar hopping and made the mistake of ordering based on what if felt like having without thinking about what I'd already drank. It didn't hurt that I drank almost no water that night. Fun time, though.
How you come off drunk usually depends on who you're drinking with, where you're drinking, and your general vibe from your day. if you're depressed, you'll probably be a zoned-out drunk who falls asleep faster. If you're happy, you're probably gonna be louder and more likely to get into shit. What I'm saying is it's more about the people than the drink.
From the posts here I'm seeing a lot of negativity towards drinking, which is totally your call and your business. People have plenty of reasons to be opposed to it. And casual alcoholism is absolutely a problem.
I will say that if you're an extrovert like me, and you're with trusted friends and good company, going out to crush a couple pitchers on a patio in the summer is loads of fun. Even now in quarantine, my roommate and I will crack open a bottle of white wine and hang out on our balcony watching the traffic, and it's a great chill time. Or we'll get a zoom call going with some buddies and have drinks and discuss drag race, or something.
If anyone's looking for recommendations - not too expensive, accessible options - come at me for my pedestrian taste I guess:
Red wine: Aberdeen Angus Malbec, Black Chook Shiraz
White wine: Kim Crawford Chardonnay, Oyster Bay Sauvignon Blanc
Beer: Stiegl, Kronenbourg 1664