I know how you feel. I just got back from a week in Mexico and I was missing my Yumi terribly. By midweek I was like, I could really go home now. She stayed with close friends of mine and did well, but I know she wasn't getting that special mommy love. She was so excited to see me when I got back. Leaving directions behind is a good thing, you want the other folks to be prepared. Also, you may want to have a supplement on hand that they can take while your gone just in case their appetite goes down in the first few days. That can happen sometimes.
Have fun and enjoy yourself...you will be back before you know it