I think someone on another thread suggested you only get money from ATM's attached to banks and during their opening hours, so if you card does get swallowed for some reason, you'll be able to get it back. Also you can phone your bank and make alternative arrangements if the unexpected happens. If you have a credit card, take that with you for an emergency - we do and never use it. BH doesn't let me take it out of a night in case I make gin-induced purchases
We've changed £50 notes in the PTT.
I don't stress about the money side of things, I get more stressed that I can't fit the kitchen sink in my suitcase