Hi KC,
Thank you so much for visiting the Disney Parks Moms Panel with your question.
Bay Lake Tower at Disney's Contemporary Resort is an amazing place to stay for your Walt Disney World vacation. My family loves the Bay Cove Pool at this resort, and the ability to walk from the resort to Magic Kingdom in under 10 minutes is wonderful!
It sounds like you have multiple guests staying in your two-bedroom villa, which is great. These villas are spacious and I think that you will find that you have plenty of room! As to shipping a room divider to yourself, I would consider why you want the room divider. It may provide a bit of visual privacy; however, it would likely not be much of a sound barrier. Also, a room barrier would likely visually break up the main room of your villa. I am not sure of the relationships between all of your guests, but perhaps the guest or guests using the sleeper sofa could store their belongings in one of the other bedrooms and then simply use the sofa for a sleeping surface at night. Finally, consider what you plan to do with the room divider when your vacation ends - if you are flying in, it is probably very large to take back on an airplane!
If you do decide to ship a room divider to yourself, please do note that there will be a fee charged to you by your resort for handling the package. Be sure to have your package addressed with your name, your arrival date, and the resort address, which can be found from the link I provided above.
I hope that these thoughts are helpful for you, KC. Please do let us know if you have any further questions.