My family is utilizing the DAS on our next trip. We did the video chat and made the Advance Selections. Now, another member of the family is joining us on our HS day. He bought his tickets but when I chatted with DAS they said to add a person, they will need to cancel our Advance Selections and then check to see if they have any for the new number in our party. We have Slinky Dog Dash and Smuggler's Run - would you let them cancel to look for another one or is there a way to add in the park? I'm nervous that if I have them cancel there won't be another one and we won't get the rides we wanted. Thanks for any advice.