"please consider finding a mobile vet" ...there is none in our area otherwise I would use it. I have even tried to get the my vet to make house a house call...they don't.
While we are away, I am having the neigbor girl look in on my little darlings in the afternoon but earlier in the day, I have the vet tech from the clinic look after them. Missie is deaf so I worry about her getting all stressed at not finding me during the day...and YumYum who is doing very well has had the liver problem. So a pair of trained eyes on the kitties will be a good thing even if it is expensive.
It's too bad about the lack of house calls by much of anyone except computer nerdz these days; but it's also good that you've got folks to look in on your family. Good job, and good karma for you guys. Have a super trip and take lots of pics for us. ;-)