We would like to see all the walls buy have a person in our group that cant walk much. Is there a tour that goes through the city for a group of 6? (An open top bus tour, bikes etc?)

The sidewalks were very crowded. There are tours using golf carts. You might want to consider that option.

The easiest thing is to get a wheelchair or a walker to help with Mobility because parking is pretty limited and to appreciate all of Wynwood Miami is beauty you do have to step into the galleries. Even though driving through the neighborhoods is pretty awesome on its own. There is definitely plenty to see, hope you enjoy the trip.