Aleidis only drinks on holidays and special events, and usually only a glass of wine or something. She's got no tolerance. But she's a teenager, so whatever.
Any more than that is liable to get her enthusiastically rambling about anything and everything that comes to mind, asking strangers what their dreams and secret hopes are, and crying about how beautiful life is. And then she'd pass out very early in the evening, wake up early with a massive hangover, and spend all day swearing she'll never touch the stuff again.