A recent experience at a simcha I played has prompted the following. I'll start it off.
Top Ten Ways To Tell That the Caterer At That High-End Event Is Chassidish
1) The hot stations at the buffet table near the band contain Carciofi alla giudia, grilled duck wraps, and potato kugel.
2) The dark sauce in a bowl at the sushi station --next to the wasabi and ginger-- is teriyaki, not soy.
3) The Perrier at the bar is actually Mayim Chayim.
Send in yours!