Chaz

Chaz, a character in "Rules of Engagement", is a crew member aboard the cruise. He's got his first appearance in book 1, chapter 5

Look
He has fair skin, short, brown hair and light brown eyes. He wears the uniform worn by crew members which is a white collared t-shirt with a blue logo.

Audrey
Since she's stolen his cap, Chaz is very mad at Audrey. The young girl needs to be very inconspicuous near him, so he won't recognize her.

unnamed wife
In "The Freshman" book 2, chapter 14, Chaz mentions that he and his wife had a long distance relationship for a long period of time and now are happily married.