We have a 12+ year old "shnoodle" mutt that we rescued as a pup. He is like our third child.
He developed diabetes 3 years ago and went blind very quickly. You would never know it by the way he carries on. It has not slowed him down one bit.
We board him at out regular, trusted vet with explicit instructions for his insulin. They have done great and we have never had a problem.
We take him on all of our local camping trips and he loves it. When we travel further away and/or we plan on being away from the camper for an extended period, we believe he is better off safe at the vet.
The vet staff is loving and we feel he will feel LESS stressed with this routine. He is always happy and spunky when we pick him up.
Find a good vet or boarding facility you can trust.