This may be the highest that demand has ever been.On April 25, Royal Caribbean (RCL 2.50%) CEO Jason Liberty told investors that the cruise line company was already allowing people to book their cruises for 2026. The statement was simple enough. But it's unusual nevertheless.For perspective, there is seasonality in the cruise business, with summer being the peak time to go. Therefore, in allowing bookings already, Royal Caribbean is likely already getting things lined up for the summer of 2026 -- a full two ...