Spending most all of our vacation at Disney but will try universal parks two days. we can only afford to buy express pass at one of the Universal Parks. We have kids from 9 to 15 going with us. Five children. Which park do you think is better to get the express pass for our age children. Any input would be greatly appreciated! We have tickets to go to both parks we just can't buy express passes for both. And the days we are going they are very expensive in February. Thanks!!