When it comes to packing for a vacation I am a terrible packer!  Most of my cruising vacations have been to the Islands/Caribbean all warm locations, and I always bring way too much.  Now we are heading to Alaska on a 7 day cruise and 4 day land tour. On NWCL.  Which I understand is casual.  any tips on what to wear/how to pack would be greatly appreciated!  Please help :) TIA