I never refused an autograph, never refused to buy someone a drink. Now I'm learning to say I've got other things on, instead of doing it and wondering why.
I learned that the hardest party to pull off successfully is Saturday night dinner. This meal is expected to be elaborate: appetizers, first course, dinner, dessert, and coffee. People arrive at 7:30 or 8 p.m. and stay for hours - definitely past my bedtime - and they all go home exhausted.