I feel your pain!! I just got back from vacation (visiting my Brother in Virginia) and I took Remy but had to leave the two other dogs with a friend.
She texted pictures and kept me up to date... but still
In December my dh had a stem cell transplant and I had to leave all three for 6 weeks... I was so very lucky to have a dear friend who stayed in my home with them otherwise I think I would have gone crazy!!!
It will be ok.. they deal with it better then we do