Honestly, I can't tell you how that poker cruise will be. Isee more & more poker games on ships but my opinion is that there are very few "pro" poker players. Some guys could be really good, but the stories of riverboat gamblers running scams and all that - pure fiction.
I am sure it will be a regular poker tournament, and if anything it will probably be more lightweight than one in vegas or elsewhwre.
But I could be wrong - I hope YOU come back here and let us know how it goes.
By the way - no matter what, the kids will have a great time. So....
Know when to hold 'em, know when to fold 'em. Know when to walk away - know when to swim (?)
Don't count your money while your sittin; at the table. There'll be plenty o' time for countin' when the cruise is done.