Hi David!
Your "Wonder"ful voyage will be a vacation to remember! Sailing around the Pacific Ocean surrounded by the natural beauty of Alaska sounds spectacular to me! When packing for your crew, I recommend layering items that can be easily removed. Temperatures will be cool in the morning and will warm up by mid-afternoon. Comfortable shoes are important especially if you are planning a Port Adventure that requires some walking. With heated pools onboard, you will want to bring along swimsuits, cover-ups & flip flops too. If your princesses like to dress like Disney royalty, a princess gown is perfect for dining attire on formal night or any night they choose.
Three self-service laundry rooms are available to use during your seven days at sea. They are located on Decks Two, Six, and Seven. You can budget about $5.00 for a load which will be charged to your stateroom account. There is a vending machine with detergent if you forget to bring some from home. I always like to bring along a pop-up hamper or two to make it easier to transport the dirty clothes to the laundry.
If you haven't already, be sure to check out DCL Cruise Mom Andi's
Alaskan Video Series. There are some helpful tips that future cruisers like you can definitely use!
If you think of any other questions, please let me know! I'm always happy to help!
Have a magical day and wonderful cruise vacation!
Nancy