Yes - he did stay at the kennel, we picked him up on Jan. 2. He is up to date with his kennel cough and other shots though. My dad heard him bark yesterday and said it sounded slightly less 'hoarse'. (The word he used, I'm not sure if its correct, I guess it kind of sounded hoarse.)
I haven't heard him bark since then.
Yes I could see him when he was barking, everything appeared normal except for the sound. He's not lethargic or acting sick at ALL, not one sign. So I'm not sure.