However, here restaurant service charges are included in the tip.

然而，这里的餐厅服务收费，都包括在小费里面。

To wait for takeout at the restaurant when delivery is available for a small tip?

当只需一点小费就可送货上门时，你是否还要排队等候外卖食品。

However, if you're eating at a downscale restaurant a tip is not necessary.

不过，如果你在一家低档次的餐馆就餐，就没有必要给小费。