Fun is actually knowing who half your guests are.
3 seconds sound clip from the Nothing but Trouble (1991) movie soundboard.
You can hear this line at 00:02:43.507 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, yeah? Am I having a good time?
- Well, Manhattan Fine Wines just delivered six cases of Salon Les Mesnil.
- Wow, pretty pricey stuff. What did I pay for it?
- What do you care? You got more money than you can even look at.
- Good, Mike. Want some more advice?
- Sure.
- Sell it.
- Fun is actually knowing who half your guests are.
- Good evening, Chris. You came!
- Hi, Chris. I save it for you.
- That's what she says to all the guys.
- I'll get the next one. Go ahead. Cigar.
- Chris, we'll see you in the apartment.
- Heya, little fella. What's your name?
[...]