Why don't we go for a drink?

Why don't we get together for a drink?
一緒に飲みに行きませんか？

Why don't we go and have a quick drink?
軽く一杯やりませんか？

Why don't we go for a drink?
飲みに行かない？

Why don't we go out for dinner together?
一緒に夕食に行きませんか？

Why don't we do something together?
何か一緒にやりませんか？

"Why don't we eat out?" "Yeah, we might as well."
「外で食べない？」「そうだね。いいんじゃない？」

Why don't we go to that new restaurant?
《誘う》あの新装開店のレストランに行こう。

If the weather is good, why don't we go swimming tomorrow?
天気が良かったら、明日泳ぎに行きませんか？

It seems like he's in trouble. Why don't we go help him?
あの人、困ってるみたいね。助けてあげようよ。