The airlines I've flown with actually do enforce it. At least for the first and business, and small children. If your group isn't called they'll ask you to stan

The airlines I've flown with actually do enforce it. At least for the first and business, and small children. If your group isn't called they'll ask you to stand aside so that group can go. Some people really push it and the crew would rather not get in a confrontation and let them pass.