Is this the right counter to check in for this flight?

这里是这航班办理登机手续的地方吗?

Your seat is 26 C, and the boarding time is twenty minutes before departure¹ and you will board at Gate 18.

你的座位是26C，登机时间是起飞前20分钟，在18号门登机。

I'd like to check in.

我想办理登机手续。

Excuse me, where may I check in for flight 237 to Tokyo?

请问，我该到哪里办理飞往东京的273航班的登机手续呢？