1DisneyFan,
We were staying at the GF. So room service put together that nice display of the cake for us. I don't know for sure, but from what I've heard, you can get this cake delivered to other resorts.
And DW corrected me on the cake, the middle filling was kind of a pudding-like substance - a little like bavarian cream, but not quite like that.
Regarding the timing of ordering, when I called I was looking for a somewhat "standard" - nothing specialized like the cakes seen on Unwrapped. So the prep time for this Mickey cake might not be the same as some of other types of cakes they are getting requests for. At least that was the way the bakery contact sounded when I spoke to them.