AP ? about children

[AspiringCindy]

We are planning 2 visits to WDW in a year span, so have decided to purchase AP passes. The problem is...in between the 2 trips, one of my DDs will turn 10. Does this pass become invalid, and would we have to upgrade to an adult AP? or, Is she grandfathered in because of the time of purchase?

 

[baloo722]

It shouldn't be a problem. They were bought & paid for while 9, so use them with a clear mind! have fun!

 

[GAIL HAYDEN]

What happens if I buy a child's AP for my 9 year old and then he/she turns 10 before the AP expires?

Disney will exchange the child's AP for an adult one at no extra charge. This follows the same policy they use for this situation in any ticket media.

This information came from http://wdwig.com/apass.htm#faq