I know there is probably no concrete answer for this, but I'm wondering what people have experienced. Do restaurants request ID for alcohol purchases for everyone who looks under a certain random age like 40? I know I have seen signs here in PA that say they are required to card anyone who looks under (I believe) age 35. Or do they really only ask people who look close to or under 21? Just wondering if I need to carry my ID, since we will have a credit card linked to our MBs I really wasn't planning to take anything else. We aren't big drinkers, and if I was turned down because I didn't have my ID it wouldn't be the end of the world, but I may want to indulge in a cocktail at some point.