If I remember right categories are switched by TAB or Q/E on keyboard, L/R or RL/RT on controller. I didn't mention it since it isn't nescessary for this demo. If you mean the spot by the register, yeah that's a special spot that isn't fully implemented. I have considered adding mouse support, but I'm targeting controller first.
Customers have a patience bar, and when that empties they'll leave you. Though they probably shouldn't drain patience while the dialogue is coming out, I'll change that. Not sure what you mean by dialogue labels for the control hints. Did it get stuck on that once leaving the interaction window? thought I covered all my bases on that