I don't think wanting me time is bold at all, but a great investment! How does the saying go, "If mom isn't happy, no one is happy!"
The Polynesian has, I think, one of the best child care facilities called The Neverland Club. It is themed after the adventures of Peter Pan. In fact, the children enter the "Neverland" by going through window just as Peter Pan, Wendy and the boys do in the story. On each trip, our sons ask to go back there, which has to be great testimony of the what it has to offer.
So, yes, you do need to reserve a space for your princesses prior to your arrival by calling 402-WDW-DINE. The hours of operation are 4:00 p.m. to 12:00 a.m. with dinner served during the evening, too.
Enjoy your evening!