LoL, I never bring cash with me to a show. I figure it will discourage me from spending more money (for example, if the vendor doesn't run debit cards). It doesn't usually work though, since there is usually an ATM nearby somewhere, LoL (at Hamburg there a bank a few blocks down, LoL). But at least it makes me stop and think how badly I want the new addition... with having to go through all the trouble to go get gash and come back... LoL.