OOOH, those Ivy Trellis hairstyles are beautiful!!! So much better than the BBB hairstyles. I would book Ivy Trellis, but then call every day to see if you can get her into the BBB at MK, assuming that the Princess treatment is a priority. If Disney Springs opens up, just realize that is a huge time investment on an MK day. You could lose about 3 hours of MK time, by the time you wait a bus to DTD from a resort (can't get one from the park), travel the distance to DS (usually 20 to 25 minutes from the MK area resorts), do BBB, then wait for a bus to take you back to an MK area resort so that you can then get transport from the resort to MK (or walk if you go to the Contemporary).