I have been to three main types of parties serving food: buffets, small bites, and sit-down meals.
Buffets offer maximum flexibility as I can walk around eating whatever and talking to whomever.
I usually have difficulty with small bites as I don’t know what, when, and where will be carried by the waiters.
Sit-down meals tend to have the best quality, but also be most time-consuming and least flexible.
However, in a recent sit-down party, I was seated next to someone who has an unexpectedly interesting background as program managers working for several major tech companies. I learned about stuff that I wouldn’t usually hear from other researchers/engineers.
I guess this is one example benefit of stochastic sampling in social events.