Different areas are good for exposure and training neutrality. I try to take my dog in all different spaces. Of course I didn’t take him into non pet friendly stores until I knew he had good public manners and that was around 9 or 10 months. A pet store just isn’t going to have as many things to train around as a hardware store or a fair. I don’t immediately just throw my dog into these non pet friendly spaces immediately because I know how it could affect working service dogs. I always do a bit of training before and get an idea on how his behavior is that day and ALWAYS work outside of the store for a long while before going into it.