We would like to go on a Disney cruise sailing from Seattle next summer (2012) to Alaska. When is the best time to book? Where is the best place to get the best price? We are military, do they offer military rates? We've never cruised before so any help would be much appreciated. We would have to go in June next summer because we are moving from Washington after that and I want to go to Alaska before we move so I'd like to get some pre-planning done now if I can.