I would not ask the vet tech outside the presence of the vet. And, I do see how it is a conflict of interest. Boarding care is consistent with what you would want the vet tech to do, take care of your cat whilest you are away.

My current vet does not prohibit his tech from doing this service. And, while my current vet does 'board', no one is there overnight. For that reason, I would never leave any of my pets there. I would insist they board only where someone is there overnight, or, for the majority of the night.

I would take my business elsewhere. And, if he so inquires, I would tell him why.

For the person that says their vet charges $75 a night, I have a tough time believing that.