Went in December. Cats were great. I mean, they're cats. I'm an animal person, so I had an awesome time there. My friend ended up baiting the cats into chasing the toys there. I personally just sat there scratching the cats to sleep (I mean the ones that weren't already sleeping; I highly recommend you do not scratch an already sleeping cat).
It can get a bit crowded if there's too many people and too many sleeping cats though.
Fun fact I learned that day, cats are amazing predators and are great at catching those butterflies on a stick toys.
Not sure if you're allowed to, but the group before us brought a laser pointer and it was fun watching the kittens chase the dot. Bring one and ask if you can use it if you have one lying around