I realize the URL would be helpful, but I can't share at this time.
1. Yes, all locations are physically staffed.
2. Yes, the Google listings have been claimed and verified for years.
3. Just one web site with separate pages for the individual locations. Again open to suggestions if there is a better recommended way of doing this.
4,5. at the moment, no GMB is not being taken fully advantage of. I hadn't heard of SWIS before today. That looks really interesting though...
6. We have 12 locations.
Thanks for the response!