It took about 4 hours for my cats to be cleared. There were two dogs in front of them from another flight though. The people at the ARC are so friendly though. They told me my cats had arrived and been put into a large room together with a litter box, that neither of them had gone potty in their crates, and that they were a bit wide eyed but happy to be pet and we're happy to be back together. As soon as they saw me, I could tell they realised what the whole ordeal was about (they had flown unaccompanied). I put them into a single crate, put them on the front seat of the car. They each took a long bath and went straight to sleep. They knew they were home when we got back to my house.
People tried to discourage me from bringing them but they are my babies. I'm so glad I brought them!