Had that myself. Pub lunch where you can't reserve tables. Walked in and there was 1 table free, a 4 seat. The wife and I ordered, and food arrived quickly. Meanwhile, a group of 4 entered looking for a table, a 2 seat had become available. One of their group interrupted us to ask if we'd move tables. I finished my mouthful of the finest steak and ale pie before telling him to foxtrot oscar. The cheek of interrupting someone dining. Wait like everyone else.