The tour operator will ask you to gather at bus no 12, just opposite to Storm hotel, when bus comes, the guide will call the name out one by one based upon first book first serve, well arranged and perfect time management.
Our guide Jessica did a great job, talked much about everything related to the Iceland and the scenery, including history, background and story, and allowing enough time for visiting each spot. She also introduced nice restaurant , things to do after the tour if still staying downtown. Highly recommended