I guess my nieces (I have two boys so our trips with them were a bit different for us) are a bit more mature (I know thats not the right word, but I can't think of a better one)....but they wouldn't be caught dead doing princess stuff or being super into character meals and things like that by the time they were 10. I had taken them both down (one was 7 and on the tail end of princess stuff being acceptable) and one was 9 and way beyond it by that point.
What they did love was SHOPPING and anything to do with the Epcot countries. The one really was into getting a trinket from each country and eating some type of "native" food in each country. The other was really into the pick a pearl thing and looking at the clothes and jewlery in the countries. They also LOVED DTD and all the shops there.
They enjoyed the Princesses and Characters as part of the overall experience because its Disney, but they definitely weren't overly into them.
she has no idea, she is coming over for Easter, I may subtly try to pick her brain...?? 
Thanks for the advice.. 
