3. Not many places actually board exotics, so keep that in mind (most often it's just vets offices or private individuals). I would make sure they understand the environmental requirements of a chin, that they need low temp and humidly, so AC is required. I would also make sure they will be housed in their own room/area away from other animals that could possibly hurt them or make them sick. Also find out how much if any hands on experience they have with chins. Do they know what kinds of things to watch for? Do they have an exotic vet they use for emergencies (if not a vet themselves)? Also will they be letting the chins out to play or will they be kept in the cage the whole time? If let out what kind of set up do they have? is the area shared with other animals? if so do they clean/disinfect the area between animals.
Some other things that can be nice that I've seen for cat and dog boarding places are things like live video feed (so you can check on your chin anytime you want) and/or daily check ins/updates either text, e-mail, video chat, or phone call. Also will you be able to visit them at all in the boarding place? that can help put your mind at ease that they are ok.