This was our route (yellow first). Only a certain number of people are allowed on the Galapagos Islands each year. This was great because some days we didn't see anyone but the people on our ship the entire day. It's not touristy at all. People aren't allowed to live on all but 2 (?) islands so there was virtually no evidence of humans where we walked. In 7 days, I saw just two small pieces of trash.