I sent some sims to mine today and here are some thoughts.
1 - the barista spent a lot of time randomly chatting to the sims
2 - it took a while for the sims to receive their food or drink items, probably because of the above
3 - there were several cats present at the beginning, then they tailed off, and later on they showed up again
4 - the treat dispenser still doesn't work in mine
It does work quite well but I'll definitely need to try again with something I build to my own liking. This one I adapted from the gallery is nice but I need the building practice and I started wishing I had some sofas like my local cat cafe has. The building is also quite small so I think a larger space would be nice.