About this app
What is Skulls Up?
The operator has no international locations. Well, it’s a state monopoly, after all. Holland Casino was also one of the first operators to launch online when the market legalised in 2021, with Petra de Ruiter joining the company as CEO the following year.
Petra’s journey to the role started in a hotel management school where she learned the ropes of hospitality, followed by a job at Transavia Airlines, a subsidiary of renowned Dutch operator KLM. This led to 24 years in the aviation industry, in a host of different roles: sales, marketing, operations – all aspects of the business that would later become useful in the casino industry.
By the time Covid came around in 2020, Petra felt she had done enough in aviation and went looking for her next role. As she told me, “Holland Casino popped up and I am somebody who by their nature looks at similarities instead of differences.
How to play Skulls Up
AI also helped Kambi reduce the delay between a customer selecting an in-play bet and being able to place it. Its dynamic live delay technology enables it to set bespoke live delay on an individual bet level, optimising the UX and alleviating friction. Across the Premier League and World Cup, Kambi reduced live betting delay by more than 40% between August 2025 and July 2026.
The result for customers was more choice, shorter suspension periods and faster bet acceptance. For operators, those improvements can support both customer retention and profitability.
While simulations and validation exercises had helped Kambi prepare for the traffic and operational demands of the 2026 World Cup, testing could not establish how performance would compare with the wider market once the football began.
What is Skulls Up?
Grant argues that he has booked five Royal Caribbean cruises that were valued at a total of AUD 22,000. He booked the cruises with money he won playing at the Royal Caribbean’s ships’ casinos.
However, before he could even board the first cruise, Grant was told that he would not be able to proceed onboard. Grant had his son and partner along with him. The company only then went to inform Grant that he had been placed on a “no sail” list, effectively a ban, because of “breaking the house rules” in the casino.
Royal Caribbean informed Grant that he had broken various casino rules. While Grant filed a legal action against Royal Caribbean with the Queensland Civil and Administrative Tribunal, he has enjoyed qualified success so far.
