To Nadine n' Penny,
Thank you for your suggestions. I think I'll fly to Seattle a couple of days ahead the sailing from Chicago. Do you guys know about any definitely-cannot-miss attractions in Alaska? I am kinda having a hard time picking the right excursions and have no clue at all. If I am able to book the excursions in the ports, is it anything to be browsed around that close to the ports? Thanks!