Lexi is completely unable to withstand peer pressure, even when there's no pressure applied, and so the moment of hesitation is brief before he takes the bottle with a murmur of thanks.

He's had wine at home, and beer, neither of which he liked, and alcoholic butterbeer, which he did, but whisky is something totally different again, burning down his throat and making his hand tremble a little when he hands it back.

"Aren't you going to play Quidditch?" It seems like a natural thing to Lexi- to make Captain, you must be good, so why wouldn't you get a job doing it? Things like being picked up for a team don't really enter his head.