Ive seen people had police look round there winkles (not nice when its just a piece of skin) and down bras etc, get a little innovative though, tight between belt and pants always worked for me.. deep in the sock also rarely take off my shoes.
most police just do the old pocket pat down anyway ^^ thats quite rare circumstances only usually if they have a deep suspicion.
Get your tickets and gear sorted early in the day, dont be daft and youll be fine. No worse than back home really, just everyones just used to such a relaxed atmoshphere about it every gets paranoid when they hear about little operations.