Translation of "Reunion" in Russian

How was the reunion?

- Как прошло собрание?
- Как собрание?

Tom went to his high school reunion last week.

На прошлой неделе Том ходил на встречу выпускников своей школы.

How many people do you think will come to the class reunion?

Как думаешь, сколько человек придёт на встречу выпускников?

- It is not necessary for us to attend the meeting.
- It is not necessary that we attend the reunion.
- It isn't necessary for us to attend the meeting.
- It's not necessary for us to attend the meeting.

Нам необязательно присутствовать на собрании.