I'm inclined to agree with Manek - sometimes a break away is really good for us and you come back refreshed and ready to pick up the instrument and see the music through a different perspective.
If you're not happy doing that then the idea of listening to the pieces is a good one (though not all the time

) and I think you can do a lot of "silent" work on music by taking the scores with you and imagining you are playing the music, rehearsing the finger patterns and so on. Silent scale practise is incredibly useful.
When my oboist pupils worry about leaving their instruments behind, I always tell them to take an old reed with them (not their concert best one!) and squeak it daily to keep the embouchure muscle tone in place. Not sure that's so easy on the Sax though.....
Go and have a wonderful break - don't fret on the Sax because, if you're up-to-speed now, it won't take you long to regain all you've mastered to date when you get back.
Best of luck with the holiday and the exam when it comes.