We will be in disney on the dining plan Aug 3-8. I haven't made and ressies yet but was wondering my 17 year old son and his 17 year old girlfriend want to eat at Cinderellas castle...the rest of us (7) don't care to eat there. Will they allow two 17 year olds to dine without any adults present? We want to save our 2 ts meals for the polyniesian. Anyone ever done this or know of anyone who did?