Services, depending on their essence, can be paid for either only in cash or also with card payment. You can pay with a bank debit card or credit card at all foodkiosks and cloakrooms, but not alyways at the ticket sale and merchandise.
There are no ATMs inside the building of Unibet Arena for the withdrawal of cash. The closest ATMs are located in Rocca al Mare shopping centre and Haabersti Circle K service station.