RSVP by January 1.

请于一月一日前赐复。

I already e-mailed to RSVP.

我已经发邮件确认会参加了。

I called him as soon as possible to RSVP.

我第一时间就给他打电话确认参加了。

Um... It says to RSVP by noon today.

嗯 上面写着今天中午前敬请赐复

Please RSVP for six people.

请回复说六人出席。

We will send our RSVP soon.

我们马上就会回复是否出席。

Her early RSVP tells the host she will attend.

她很早就回复主人说她会出席。

RSVP: Will you come to the party?

请回复：你要来参加聚会吗？

RSVP opens a session (2) with QFS.

RSVP通过QFS打开一个会话(2)。

Is this like an RSVP thing?

这是要回复的吗？

I'm calling to RSVP for the party.

我打电话来回复有关宴会的事。

RSVP sends a V5 Query request to QFS (2).

RSVP发送一个V 5查询请求给QFS (2)。