My Vets very good about boarding. When Juke Joint Joseph or Michael the Dream Cat go in for an expensive procedure , a lot of times he will leave that boarding charge off!!
And when they go there, they are spolied by the Vet Assistants with treats and snacks.
I would think that staying at a Vets is stressful and Your Cat would not enjoy that at all!!!

Thats not a considerate Vet!!!