Dinner will be a cold buffet, not a sit-down meal.

主餐是自助冷食，不是坐着等服务员送来的那种。

《牛津词典》

In a rare blast of temper over dinner one night, the elder Mr. Gates reacted to a bitter mother-son argument by pitching a glass of cold water in young Bill's face.

一次晚饭时双方又吵得不可开交，老盖茨罕见地失去了耐心，他将一杯冷水径直泼到了盖茨脸上，结束了这场母子争论。

youdao

I found a cold repast spread out, evidently the remnants of last night's dinner.

我发现摊开在桌上的冰冷的食物，也显然是昨晚的剩饭剩菜。

youdao

Astronaut Dave Wolf, who has been away from the planet for the past four and a half months, is looking forward to a Saturday night dinner of pizza, a beverage (known to be cold beer) and some time with his girlfriend.

CNN: The View from Space

Is taking a person to a ball game, nice dinner and cold beers illegal?

FORBES: A Lobbyist's Appeal For Common Sense - The Case of Kevin Ring

They ate their cold dinner, went to bed, their sleeping bag was a little wet, and they come back with a story of triumph.

CNN: Independence day: For our children it can be summer camp