I still haven't found a vet I'm thrilled with

The one we're taking Lucy to for now has boarding and grooming. I called Monday as I wanted Lucy to have a bath, nail trim, and the works as I'm busy prepping for a holiday gathering here tomorrow. They said in order to be groomed or boarded they require the influenza vaccine.
We live in Kansas which is not a state with reported canine flu (only at dog tracks, which we won't be racing Lucy anytime soon
I understand requiring certain other vaccinations, especially kennel cough. I didn't make the appointment because I wanted to do more research and not feel pressured. This afternoon Lucy will get her bath and nail trim from Moi.
so, how do you feel about requiring this vaccine. I think it's a good way for them to make an extra hundred. Am I being too cynical?