We always take the girls towels with us everywhere we go just in case something happens that they need a bath and we don't use other peoples towels, especially to use on our dogs. The towels can then be hung outside to dry. I use the towels three times before laundering.
You could take one of her favorite toys and a chew.
Make sure you take her shot record, just in case, and harness and leash of course.

Have a great vacation. Take lots of pictures to share with us too!