I'd like to pre-order our mickey ears and have them in our room already when we check-in as a surprise for the kids. Hoping for an extra special magical moment right from the start!

Is this possible??? Who could I call to arrange?
I also got this same idea from watching Jon & Kate Plus 8 (I love that show!) If you noticed, their friends arrived at Disney before they did, so they might have had something to do with the mouse ears being there for them.
This will be our first trip to Disney so this is what we decided to do - we are going to send each of our kids a gift basket, signed "from Mickey" of course. Each basket will have personalized mouse ears, autograph book & pen, stuffed animal, etc..... things that I would be buying at the parks anyway.
One site that I really liked was
www.memoriesbybetsy.com - she will shop for the items for you (personalized mouse ears included), and she only charges what Disney charges for the items. She does charge a $25 delivery fee for the basket, and $10 for each additional basket ...... you can also mail her anything else that you would like to incorporate into the basket (which is what I love about her site - I haven't found any other sights that are willing to let you send extra items to add). To me, that is a reasonable delivery fee. I know alot of people make their own baskets and mail them ahead of time as well. Seems like shipping the baskets would be about the same as the delivery fee though.
If the basket is already there when we check in - we plan to ask them if they can "deliver" it to the room in just a bit since it a surprise for the kids.
If you don't want to do baskets for everyone, then maybe just one "family basket" with personalized mouse ears for everyone in the family. It would be worth the delivery fee to surprise everyone.
Here is another link to a thread here on the DIS that is about gift baskets
http://www.disboards.com/showthread.php?t=1845513&referrerid=190432
Hope this helps!