They didn't tell me if anyone got bitten, but my guess is yes. My other cat Sam has always been terrible at the vet. He gets in this incandescent rage that is just awesome to behold. They have a notation in his file that he's "difficult" and they always bring an extra tech to his visits. Sigh. Thankfully he's reasonably healthy, so he doesn't have to go too often. GreyKitty was always very good at the vet, and my old cat Xing loved the vet (god knows why, she was there almost as often as Harry).

My advice to your parents is to take the cats to random places with the carrier as often as possible so they don't fear the whole process. And Kittens?! Where are the pictures?! Want pictures!!!