Hi, Hope!
You must be so excited!
I know that when I receive anything in the mail for an upcoming Walt Disney World trip, it makes me smile. (Sort of proof that yes, in fact, we WILL be there soon! Woo hoo!)
Regarding your Key to the World Cards, which will be your room keys, and can include your park tickets as well as charging privileges (should you choose to approve that), you'll get those upon check-in at
Disney's Art of Animation Resort. While each one will be the same in color, each one will also be personalized with each family member's
name printed right on it. No worries about getting them mixed up with one another that way, right?
On the other hand, we often personalize certain items on our own, using favorite Disney character stickers, etc., just to make it easier to distinguish between two similar-looking items. (Trust me, when both kids choose the same color Resort Refillable Mug...and one is the older sister and the other the little brother..."EW!"...such personalization saves us from MANY arguments!) Consider lanyards for helping you keep each person's KTTWC separate from another's; these can be brought with you to WDW or can even be purchased at the parks, once you arrive.
Happy planning, Hope! Your vacation is right around the corner! Be sure to send us more questions as you think of them, too; we love to help!