"Family meal"不是家庭聚餐，那是什么？

维基百科：

A family meal or staff meal is a group meal that a restaurant serves its staff outside of peak business hours. The restaurant provides the meal free of charge, as a perk of employment. Typically the meal is served to the entire staff at once, with all staff being treated equally, like a "family". The restaurant s own chefs prepare the meal, often using leftover or unused ingredients. A chef may also use the family meal to experiment with new recipes.

      Family meal或staff meal是餐厅在营业高峰时段以外为员工提供的集体聚餐。该餐厅免费提供膳食，作为一种就业福利。通常，餐厅会提供给全体员工，所有员工都被平等地对待，就像一个“家庭”一样。餐厅的厨师通常使用剩菜或未使用的食材来准备餐点。厨师也可以利用family meal的机会来尝试新食谱。

所以family-meal 指的是
(餐厅的)员工餐

餐厅工作人员会坐在一起吃饭，

就像个大家庭一样，

所以就叫作

family-meal

如果是真的一家人一起吃饭可以怎么说呢？

通常一家人会在晚上聚在一起吃饭

所以就是

family dinner  家人一起吃饭

就可以啦

如果要强调一家人好不容易聚在一起

就说成

family reunion

A reunion is a party attended by members of the same family, school, or other group who have not seen each other for a long time. （家庭、学校及其他团体成员的）团聚，重聚，聚会

family together
释义：
together: an informal social gathering
尤指非正式的社交聚会。

例：

Sorry I m not available on Friday night. There s a family get-together.

周五晚上我没时间，有家庭聚会。