they don't need string to tie them to the bedposts. I tend to put the padlock on their door when I go to the pub.
Shall I come to you? I don't mind drinking a few pints and then driving home, it's easier than faffing about with taxis and lifts from others.
I'll have the vodka in my bag so we can just order a tap water if we like - that;ll keep the costs down...