i will be watching as we r also thinking of going on the boat sometime this year.

We have been on boat before kids.

From what a friend told me who did go with a 10 month old, day sail is easier, kids play area full of bigger kids (3 - 7), night sail you must book a cabin you can not go in cruise seats with kids under a certain age.

not sure of things to do without kids as most things we did were not kid friendly,

port arthur is worth a visit.