I'm actually thinking of looking into boarding my kitties the next time that I'm out of town for a couple of reasons.

My cats are pretty shy around others - even when we've had neighbors come over to feed them - they don't see the kitties.

Last time my in-laws were out of town we would check in on their very shy cat. Well, the very shy cat became a very sick cat and she almost died and we almost didn't catch it in time. (she is fine today I'm happy to say - thanks to an absolutely wonderful emergency vet who diagnosed her with pancreatitis).

I'm starting to look into boarding facilities around here. There are some that have decent sized spaces that the three of them could share. I noticed that at least one of them is right next to a veternary office in case anything goes wrong.