DEAR ABBY: I recently hosted my husband’s birthday. It was a great party. I reserved for 85 people, including the DJ, his assistant, the party planner and her crew. On the day of the event, 20% of the guests who RSVP’d did not show up. One couple said their two daughters had a debut party that night. Another family said their son had an outing. Others had legitimate reasons, like being sick or the house catching fire.