Can you pay for a Mirissa whale watching tour with credit card.

Highly reputable large operators like Raja and the Whales absolutely accept major international credit cards if you book formally through their official office or website. However if you are negotiating a cheaper last minute ticket with a smaller random boat operator directly on the docks in the early morning they will strictly demand crisp physical cash usually preferring Sri Lankan Rupees. It is always safest to pre book online using a card to guarantee your spot on an ethical boat.