Took four kids age 9 and under for a week cruise in the eastern carribean and had a fantastic time. Holland America offers a kids club (Club Hal) where you can drop off the kids even when in port. This came in handy especially when the lady and I wanted to go to dinner in the formal dining room. We took and easter cruise and there were lots of other kids but I think Holland America generally caters to an older crowd. The kids liked the pool, seeing the ports, movies, shows, the continuous supply of ice cream and cookies available, tour of the kitchen, steel pan lessons, shuffleboard, and just exploring the decks. Safety was always a concern for me and did not leave them unattended while on deck as the safety railings were easy to climb especially for active boys. The only part that sucked was that my kids had to pay full adult price including my 2 year old son which was criminal.