Usually it’s a bad sign when you see a large group of people at the deli who don’t appear to be in an organized line. Usually what it is are a bunch of people who don’t regularly go to the deli and are all together but only a third of them are ordering stuff if that. My new deli I go to I get in line, but if I manage to make eye contact with them before they take more orders then they get my bagel ready for me which is awesome because I then just skip over to the register.