This might not be the usual for a lot of people as I know some will say 'what's a night out'? 
But I'm relatively young (early 20s) so want some opinions.
What do you think the ettiquite is when taking a bottle to someone's house to drink for pre drinks?
I took a big litre bottle of vodka to a friends I regularly go to to pre drink before we went out. Brand new bottle. She's had other people round since and they've drank it. So next time I go round id have to ignorantly ask for my bottle to drink or buy another to take.
In mine, if someone brings a bottle of spirits to pre drink, I leave it for them until next time. I wouldn't drink it on them.
What do you all think the ettiquite is about bottles of spirits people bring to pre drink and leave at your house because they can't be taken the club. And I'm not talking about an unfinished bottle or wine brought to share on a night in.