I just booked the ice palace boutique for our family. The CM who answered the phone said they haven't had a lot of calls yet for it. I booked two appointments for first thing in the morning, it opens at 9am. She told me that the boutique and the café are at two separated locations. There is a little boys package, the Olaf package, for $19.99. The Disney blog site said there is no reservations for this, but the CM made a reservation for me so I guess that is incorrect. I booked the package with the café included, and the CM said that when we got to our reservation we can change if wanted... I kind of wanted to peak at the offerings before committing to spend nearly $100 on junk food, but it wasn't clear that I would be able to do this.
I'm assuming we get into the park a few minutes early like if we had a 9am ADR? I guess I will see. The CM told me the cancelation policy was one day, and if we no showed we would be charged $10 per reservations (so $20). I forgot to ask about the reserved seating for the sing-a-long, so I will keep my FP for now. Last visit to DHS we missed the sing-a-long because my kids fell asleep during our window and I couldn't change it to another time... so a back up is a good idea!
Just wanted to share the info if anyone was wondering.