If we spent a night at a bar how many drinks would you have? Might not apply to you but I've spoken to many people that think it's hard to drink 3L of water but

If we spent a night at a bar how many drinks would you have? Might not apply to you but I've spoken to many people that think it's hard to drink 3L of water but will happily not back 6 pints (500ml) in an afternoon.