The boat goes every day of the year that the weather allows it. Two tanks, two guides in the water, and the sites chosen on the morning according to the current rather than printed on a wall in advance.
Groups are arranged by experience, not by who booked together. It means a couple sometimes dive in different groups, and it means nobody is dragged along behind divers doing something they are not ready for.
Tanks, weights, fruit, water and tea are in the price. The first dive of your stay is a check dive on a gentle site, whoever you are.