4. Leaving your children unattended
We all have been in a restaurant and just when we were having a great time, a screaming running child had to ruin the mood. It is annoying when others let their children run wild in the restaurant while they ignore them and enjoy their time with their party: all while you are barely capable of holding a conversation with yours over the ruckus.
So do not be that person. You hate it when others do it, so make sure you keep your children entertained. If you know they get bored easily, bring over some toys or a coloring book, something small that can keep them occupied at the table. Not only will it make your own experience better, but the staff and other diners will thank you and applaud your parenting skills.