When we were first married, we decided to celebrate birthdays and anniversaries by doing something, rather than buying expensive gifts. Lots of birthdays involved dinner in unusual restaurants. One year I took Daddy to a restaurant where they sang happy birthday to him. Let's just say it didn't go well. I never did that again.
Given that this was a big birthday year, I put aside all those warnings and planned a surprise party. Everyone agreed to keep it a secret. Yes, we were planning a surprise party.
Daddy walked into the restaurant with the brunette twin. It was her job to keep Daddy busy all afternoon. When he walked into the private room where everyone was waiting. "Surprise" echoed throughout the restaurant.
The girls were so happy that they were able to pull off the surprise. Of course, it helped that they forgot about it in all the "starting high school" chaos. It was really hard for them to keep the secret once they remembered.
Daddy had such a good time. It was a terrific success from start to finish.