[surge]

One, there was one open table, they had purchased their ice cream and were entitled to a table before you do. You don't "call shotgun" on tables. So what, the family who has their ice cream has to stand now while you wait in line (during which time another table may clear by then that you can sit at).

Your rules are just as arbitrary and inconsiderate. Let the people who got their first and need to eat their food sit first, there is no point in having an empty table go to waste while you wait in line.