How the OP characters handle hangovers!
1. Usopp declare’s his hate for alcohol to anything that will listen. Even the toaster will be informed.
2. Sanji always drinks to much at the bigger parties and will draw a blank on what happened, therefore he is always confused when he wakes up.
3. Nami will have had a drinking contest with Zoro and lost (just barely though, next time she’ll get him!) and suffers the consequences.
4. Zoro loves the day after mostly because he doesn’t have a hangover like everyone else.
5. Franky will be found in a dark room and resent anyone that tries to cheer him up.
6. Chopper knows how much he can take (he counted) and will never have anything but a mild hangover at worst.
7. Robin stays in bed and sleeps, she might go up to drink some water but that’s it.
8. Luffy hates being hungover, he can’t run around, or play, without feeling sick. He likes to watch Disney and whine.
9. Brook can’t get hungover because of reasons.