客は

the guest; the visitor, the customer; the guest

→ 客
phrase Rare #24,501
the guest; the visitor 客 refers here to a visitor or invited guest; は marks it as the topic.
JA: 客は私の真向かいに座っていた。
EN: The guest was sitting directly across from me.

そして客は王様だった

And the customer was king.

— グッバイ、レーニン! (2003)

スペンサーポートからの客はごく少ない。

Very few customers come from Spencer Port.

大部分の客は外国人だった。

Most of the customers were foreigners.

罰を受けてる者に客は禁止だ

Those being punished are not allowed visitors.

— コーラス (2004)

新しい客はホテルの宿帳に登録せねばならない。

New guests must register in the hotel's guest book.

客はお前が初めてだ

You're my first customer.

— GHOST IN THE SHELL (1995)

娘の結婚式で客は正装

The guests are dressed formally for my daughter’s wedding.

— ワン・バトル・アフター・アナザー (2025)

客は私の真向かいに座っていた。

The customer was sitting directly across from me.

phrase Rare #30,313
the customer; the guest Also refers to a spectator or audience member, depending on context. は marks 客 as the topic.
JA: 大勢の客は歌が終わると拍手をした。
EN: The many audience members applauded when the song ended.

いつも客は降りてから

The passengers always get off first.

— TAXi (1998)

その客は私が見せたものを全部いやだといった。

That customer said they disliked everything I showed them.

大勢の客は歌が終わると拍手をした。

The large audience applauded when the song ended.

その客はだまされたと主張した。

The customer claimed that they had been deceived.

この客は急いでるのか

Is this customer in a hurry?

— Tampopo (1985)