noun
drinking party; banquet; feast
A formal or semi-formal gathering centered on drinking, often with food. Slightly more literary than 飲み会.
会社の創立記念に酒宴が開かれた。
A banquet was held to celebrate the company's founding.
彼は酒宴の席で乾杯の音頭を取った
He proposed a toast at the drinking party.