全体人员均按规定时间召集到场。

Everyone was assembled at the appointed time.

《牛津词典》

活动主办人花了很多时间在计划和准备一次活动上，所以大多数人都很清楚这个问题的答案，那就是要准时到场。

The event host spends significant time and resources to plan and execute an event, so most people know the answer to this question: be on time!

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这些日子，当我们去参加舞会的时候，我们同时到场，同时离开，但是中间时间我们各自玩各自的。

These days, when we go to a party, we arrive and leave together, but in between we'll mingle separately.

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