We are a family group of 14 flying into Seattle for a couple of days before a NB cruise departing from Vancouver in June 2014. We plan to take Amtrak the night before cruise departure to overnight in Vancouver. Of course we'd like to sit together on the train. We have no experience traveling on Amtrak. Should we purchase Business class fares in order to ensure we will have reserved seats together? What would you recommend for a group this size traveling on Amtrak Cascades? Thank you.