We believe our crew members provide world-class service and we hope you agree. We do not add an automatic service charge to your account as we prefer that guests reward our crew solely based on their performance at the end of their cruise. If you would like to do so, any amount you feel appropriate is truly appreciated. However, for guests who inquire, we suggest each  passenger to leave between $300 – $350 which is the international standard for a luxury expedition vessel similar to the Origin, Theory & Evolve.  Cash is the preferred method of payment on board. You can also charge the gratuity to a credit card (Visa or MasterCard only). Gratuities are distributed among all crew members including naturalist guides.