what do the stores look like
Like a Smith's store compacted into an eight of the space a regular Smith's takes up.
When I need to take a piss in the night I walk in, lift a lid, take a leak, close the lid, press a button and leave.
Doesn't require a contol panel or even electricity.
But then you have to deal with those icky germs and stuff.
In all serious, pisses might not be that affected but morning bowel emergencies are. Run in without having to worry whether the seat is up or not or if the lid is up, sit down on a preheated seat, unleash, press a button to clean and then dry, and leave. It's more super convenience than anything.