We are a family of 4. Two young children (10,14). We want to travel to Galapagos island. Santo Cruz and Isabella around March 25-April 6) . I just wonder if we can book land / boat tour after we arrive at the islands. I don't want to book in advance because it seems expensive and all online tour operator offer a whole package which may not be flexible for us. Please give us some advices. Do you know any independent / local tour operator on the islands? we want to support local economy as well.