I discovered that if you buy and wear any tiara in the park, every cast member will refer to you as “Princess”. Even if you’re 40. 
The last time I was there, in the disgusting heat of an Anaheim summer, there was a little girl of maybe 5 or 6 in full Maleficent costume. In velvet. Purple lipstick, towering headdress, and all. I said “Great outfit!” and she snarled at me, totally in character. So maybe you can convince them to go as Evil Queens and such instead.
