The etiquette of taking pictures in coffeeshops.
Especially menus.
*************** ALWAYS ASK FIRST **************
Most shops will let you take pix to your hearts content, a few don't
even care about videos.
ALWAYS ask first. It's always at the option of the bud tender, so if
one won't let you, go back on another shift and that one might let you.
Be persistent.
Generally, try to keep people out of the background. Some folks don't
want it known that they frequent Amsterdam coffeeshops, I do and I'm
proud but I'm not everybody. Menu pix are short range and don't have
much if any background.
Almost as an afterthought but of primary importance.
Remember, really stoned people don't like flashes of bright light
and most of the folks there are pretty stoned.
Don't use your flash if at all possible. Most digital cameras
will work in pretty low light and software can lighten it up later.
Often the bud tender will move a menu to better light or let you
take it to better light, say to a window with light streaming in.