I went in August and purchased the silver castle charm one, but lost the charm just before my March trip. I purchased my new bracelet at Mousegear in Epcot. They are sold at many locations throughout the WDW Resort. I know they have them at Mousegear in Epcot, the gift shop at the International Gateway in Epcot, World of Disney, Tren-D in DTD, the jewelry store in MK, and I'm sure many other places. I'm not sure where/who you could go to for a list of actual shops, but it's worth a try. Trust me, you should be able to find what you are looking for, no problem.
I have only seen the Mickey charm in silver and gold, and the Castle/WDW logo charm in silver and gold. I have never seen a Minnie one, or other style for that matter. I must have missed it!
From the link-
The Alex & Ani blog announced the arrival of their newest Disney licensed charms to different locations throughout the Walt Disney World and Disneyland resorts earlier this week. At Walt Disney World, the new charms are available at: Uptown Jewelry (Magic Kingdom), Agrabah (Magic Kingdom), Pirates Bazaar (Magic Kingdom), Emporium (Magic Kingdom), Once Upon a Time (Hollywood Studios), Tower of Terror (Hollywood Studios), Hilton Bonnet Creek Resort Hotel, Ink and Paint (Art of Animation Resort), Mouse Gear (Epcot), Calypso (Caribbean Beach Resort), Donalds Double Feature (All-Star Movies Resort), Everything Pop (Pop Century), World of Disney (Downtown Disney, and TrenD (Downtown Disney).
Not sure if this info is outdated but maybe a place to start.
Save Up to 30% on Rooms at Walt Disney World!
Save up to 30% on rooms at select Disney Resorts Collection hotels when you stay 5 consecutive nights or longer in late summer and early fall. Plus, enjoy other savings for shorter stays.This offer is valid for stays most nights from August 1 to October 11, 2025.
CLICK HERE