Reddit mentions of Java Over The Door Shoe Organizer with 24 Reinforced Pockets. Organize Your Shoes with This Shoe Rack Over The Door Organizer and Save Space. Hang on Standard Doors with 3 Steel Over The Door Hooks.

Couple more to add to this list. If you bring a few powerful magnets, you can use them to stick all of the papers like the funtimes, ship mail, and menus to the wall to keep all surfaces free for your stuff. I use hooks like these so we can also hang hats or whatever on them.

I use an over the door shoe rack like this on the bathroom door. It also helps keep things organized and clutter-free.

For the sail and sign card, we use a simple velcro cable tie. String the sail/sign card to a keyring, put the keyring on the cable tie, and wear on the wrist. Card usually comes with a small hole punched in a corner.

If you have motion sickness, but don't have the patch, try getting some green apples from the lido deck to keep in your room. They sometimes help. Also, room service will deliver a dramamine and the charge is minimal. Talk to your steward if you feel motion sickness, they are great.

Don't forget you can carry on with you one unopened bottle of wine per person! You can purchase bottled water for a reasonable price.

Have a great time!