I was just coming back to clarify. Each of those phases is on it's own lot with multiple stores and registers in each store. I've done a lot of reading and getting conflicting points of view. Some said it doesn't work and some say it does. Regardless, I'm just having fun rebuilding RV and I don't actually care if the builds don't function. Having said that, when I go live, someone is in the art store manning the register. I have a bunch of mods loaded up which could potentially make it functional and that would be a bonus.
If/when I get back to actually playing the game, all the elements are there that are needed to make the game work for the sims - hospital, police, military, school, town hall, etc.
The bookstore does actually work since I placed a rabbithole rug in it and it gets lots of activity. Sims will hang out in the store itself and disappear into the rabbithole if they are there to actually purchase a book.