We had so much fun together this year. We did this:
It is so hard to believe that you are leaving already. It seems like you just got here and now you are gone. I won't see you again until Christmas and that seems like so far away. Work is waiting for me and, between you and me, is kind of giving me an evil grin. Work is like that, you know.
Come back soon, vacation. Bring the beach with you.