First of all, I think it's really great that you're taking the time to do this. I'm sure your wife will be thrilled when she experiences the magic at DisneyWorld!
As I was out trying to get the ice off my driveway....only 51 days to go before escape this nasty Michigan weather and get back to the magic and wonderful weather at Disney....I thought of the following clues.
In keeping with the "Europe" theme, I thought of another castle, Crazy Ludwig's castle, Neuschwanstein in the German alps and came up with a rhyme like this:
Although we're not crazy like Ludwig, you see,
we'll be surrounded by castles, mansions and finery.
(Castles - Cinderella's castle and all the toy castles in the gift shops, mansions like the Haunted Mansion and finery - the Crystal Palace). But of course, the castles, mansions and finery could all point to Europe also.
I also thought of all the animals in Animal Kingdom and of course all the lovable Disney character animals.
Animals, animals wherever we go,
It actually looks like they're smiling at us, you know.
Not sure I like that rhyme but with the animals, but it could point to a zoo or an African safari vs. Animal Kingdom or all the Disney characters in the parks and rides.
In keeping with the animal theme, I was thinking about something with small (lovable) rodents...like Mickey, Minnie and Ratatouille. I can't come up with a rhyme right now but the rodent idea may definitely throw her off course.
Good Luck with your future clues and please continue to post them. It's great fun following your story. And have a wonderful, magical trip!