I also like customer service because of simple scripts and knowing most customers if you serve them well leave quickly and happy. Glad you enjoy it!
My personal problems with it would be mainly the noise- foamers, espresso machines, lots of clinking, breaking glasses, people being loud, washing, heat, strong smells and rush hour pressure and having to hear many people at the same time, possibly lights if it is a place with large windows as many cafes are. Also socializing pressure with co-workers. All of these are of course a bit better or completely nonissue if it is a small place in an area that is not very busy.