Expect to be asked to put your Glass away when you go see Cirque Du Soleil at Citi Field this March. The show's officials say that the device will be banned in an effort to prevent recording of the performers.
A Glass wearer was questioned by Homeland Security at this AMC theater, on suspicion of piracy. Movie theaters might ban Glass in the future, but to keep your interactions with federal agents at a minimum, you might consider putting your device away.
This Las Vegas gentlemen's club has made it very clear that Google Glass is not allowed, in case a patron tries to record some of the club's goings on. They'll ask you to check in your device before you enter the club.
Seattle's Five Point Cafe has a similar policy--no Glass allowed! Remove your Glass before coming inside this restaurant, or they'll ask you to do so before you sit down. Five Point has proudly declared a No Glass Zone.