No, you cannot pick it up. The bakery is not a 'store' to buy and pick things up. They make all the desserts for the GF weddings and their restaurants and room service only.
The slipper is NOT covered under the dining plan at either GF or the CRT.
I would order it no later then 48 hours.
Here's our slipper ($14 at 1900 Park Fare) and Castle cake ($25):
Personally, I wouldn't do it that early. I'd do it about a week to a couple of days before. They recommend a week to 48 hours at least when I called to order it they did.
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