We brought our cat here from the US just over a year ago. She is now 12 years old, and not in the best of health, but she did well enough in the quarantine.
I can't answer all your questions, but here's what I know. . .
The quarantine station in Sembawang is terrific. Very clean, very nice staff. You can visit your pet nearly every day if you want to. Cats are kept in separate quarters from dogs. There are a number of "cells" set up like a jail, maybe 6 feet across by 8 feet deep, floor to ceiling with a shelf. Some of the cells have a window, and many cats enjoyed looking out the window. We chose an air-conditioned cell, and I believe they also have some w/o air conditioning.
Despite having all the required papers, there isn't anything you can do to shorten the 30 days. Nor can you lengthen it. We were moving from
Serviced Apartment to our current place just at the time our cat was to be sprung, and we had to take her on the exact day she was to check out, even though an extra day would have made it an easier transition.
If you have multiple cats and want them in the same quarters, that's okay. I don't remember seeing more than two in the same cell, but there may have been three. . .
You provide your own food and treats, with instructions on how much to give. They have a chart posted in each cat kennel with the amount consumed, and litter box activity. They provide the litter, and keep it very clean.
The AVA quarantine facility is a bit of a hike from the nearest MRT station. If you plan to visit often, bring your walking shoes, or plan on taking a taxi. . .or drive. There is enough parking for visitors.
That's about it. Others will probably add to this info. We were very impressed with the facility, and hold it in high regard.
