Hi Glenn!
Walt Disney World Resort is one of my favorite places, and I think I speak for all of my fellow Disney Parks Moms Panelists when I say that we share your decorating goals. While Walt Disney World Resort does offer many mementos of 'Home', like the exact H2O+ scented bath products found in your guest room, bedding is a bit harder to track down.
ShopDisney.com does have a few embroidered throw pillows like what are in some of the Deluxe Resort Hotels. Through Google I found a company with who sells Disney's linens, however none of the items mention in which specific Disney Resort Hotel they are used. Your best bet would be to reach out to the Disney Merchandise Services Team to inquire about any specific bedding. Their contact information is Merchandise.Guest.Services@DisneyParks.com and 877-560-6477.
As Disney Resort Hotels go through refurbishments, which quite a few are right now, their old decor is sent to numerous sources. There's a Cast-Member only store at Walt Disney World Resort that usually gets first dibs on furniture, so maybe reach out through your connections to see if you know-someone-who-knows-someone who is a current Cast Member. Sometimes authentic retired pieces end up on eBay. And I read last week that an Orlando resale furniture store had over one hundred entire room sets from one of Disney's All-Star Resorts.
Check out these current
Disney co-branded collections. Another direction is to look for Disney fan-inspired items online, where you'll find everything from recreated vintage attraction posters to Disney-scented candles. Some smell like scenes of your favorite attractions, like burned Rome in Spaceship Earth, but others smell like individual Disney Resort Hotels. Imagine coming home to the scent of Disney's Contemporary Resort. Yes, please!
I hope this helped, Glenn!
~Kristen