Visiting a Cat Cafe was one of the easier things to do, simply because the signage was always recognisable. Where everything is squished together into high density high rises, with a million doors and signs going up the side of the building you begin to appreciate the world of easily recognisable signage. Overall I found identifying what we wanted to do with a wall of signs really really intimidating (obviously not being able to read Japanese and orientate myself) and I struggled.
Except that every now and then you'd come across a sign that had a picture of a cat and a coffee. It was actually pretty lovely, but for the cats (not the coffee - they don't put milk in, which possibly might because the cats might drink it?).
This was pretty spontaneous for us, we saw a cat sign and wandered in, following the signs up the elevator to the right floor. First things first, you take off your shoes (they give you slippers if you want them) and you wash your hands. And then there are rules about what you're allowed to do and what you're not allowed to do. They're pretty simple, and protect the cats from excessive and unwanted attention. Basically - if it cat walks away let it. If it's sleeping don't wake it, and don't pull any tails. Don't pick any up or hug them, no loud sudden noises. Don't feed them people food. Don't use the flash on your camera. Common sense, really. It made me much more comfortable after the animalfiasco's in Thailand. These cats weren't forced into interacting with us if they didn't want to.
We were given a tiny little container of shredded chicken (and I mean tiny, you get maybe a tablespoon worth of meat, if that. Good for making sure that the cats aren't overfed). It's basically encouragement for the cats to come say hey. It was pretty hilarious to watch Zee with all the cats, he opened his container and fed the cats all in one go (I was much more frugal with my chicken).
They'll come walk over you and have no problems looking for affection (read: chicken). Some will play with you, if you picked up a toy. A lot just sleep, which seems like an appropriate cat thing. It really was lovely actually, and a pretty good way to get your cat fix in if you don't or can't have pets yourself.
We might have stayed for just over an hour and I have to say, it was bizarre but really lovely. One of the highlights of Tokyo, I think.