I am not getting too excited about packing for an Alaskan cruise AND formal night. Our family of 4 is able to pack for 10 days and each have a carry on and a backpack. This is easier in warmer climates but Alaska is a little different. We have been on HAL to Alaska and most dressed up on formal night. I know we will be fine if we are not in our formal wear on DLC but interested in hearing what most did on the prior DCL Alaska cruises. We always dress appropriate for dinner and are hoping to step it up a notch and "get by" with that. Basically, is DCL Alaska more formal or less formal than the Caribbean?