a pair of people

At the door are a pair of hotel workers. They tell Arthur the other two rooms are ready. He turns to his children, and tells them these people are going to show them to their rooms.

As Jack and Nikki come to the door, they see there are a 'matched' pair of bellboys. But that isn't true. Jack sees the one with his luggage is no guy. She is all woman, about 5' 7" tall, and filling her uniforrm out very nicely. Nikki sees the bellboy with her luggage is no slouch either.

The kids follow their respective luggage down the hallway, in different directions, both keeping an eye on the one who is carrying it.

Quickly, they are at their own rooms.