Once seen as the preserve of stock market investors and retirees, cruise travel now appears to be booming on the back of surging bookings by people in their 20s and 30s. Data put together by Trip.com shows a 344% year-on-year rise in bookings worldwide in the January-October 2024 period – a spike that the travel booking platform put down to people aiming to catch “diverse destinations and experiences in a single journey.” “Younger travellers are at the forefront of this growth,” according to Trip.com, which said bookings by millennials went up by over 850%. “Those of Gen Z travellers increased…