We took this ship in early Sept. There were only 32 passengers on the Rio Negro portion and 28 on the Solimonos portion. The service, food, ship, etc. was wonderful. The tour guides do a very good job (some better than others) and offer everything in Portuguese, Spanish, and English. We were the only Americans on board. We went to every lecture and took every offered excursion. We had a great trip. Email me any questions.