I've had concealed carry for about 20 years and take great care to not print.
My standard: I must be able to drink from a fountain, get something out of a shopping cart, or sit on a stool without someone "looking" at me noticing anything, no printing.
That's my standard ^ regardless of the legality of printing.
Some places are typically safer than others, but criminals are mobile and may show up in a typically safe place without notice.
Strive to always carry the gun you would carry on the "bad" side of town.