I think the majority of CS in the parks are using it and some snack locations too. When you log into the app, you will see all the places where you can mobile order.
All reports are that it is still a time saver even though DDP users have been able to use it for almost five months now.
Can someone tell me how this works if you want food a specific way - like a grilled chicken club at cosmic rays without cheese or bacon? Is it possible to customize order with mobile ordering?