There are specific timeslots set aside for each attraction for DAS Advance Selection each day, so there may be not be a slot available for the attraction or time period you want. They suggest being prepared with 3 choices when you call in case your first choice is not available.
I just registered my son today. It seems DAS preselections times are between 9 and 12, 2, 5 and 8. Not all rides were available at each time slot. There was only 1 Slinky Dog time available during our HS day.
The Disney Dining Promo Card is a great way for you to “Stay, Play, and Dine” at Walt Disney World this summer. This offer is available for arrivals from June 25 to September 14, 2023.