I love to use mobile order when the parks are super busy (Like Thanksgiving last year.) I was able to decide where to eat and when as I was on transportation to the park in the morning. I would select my time and place my order for lunch by about 8 or 8:30 am each day. Then, as I was headed to the restaurant at my appointed time, I would hit the "I'm here" button so it would be ready by the time I got to the restaurant. If I was also doing quick service for dinner, I would select my time slot and place my order as I finished lunch. This way, no matter how busy the parks were - I almost always got my desired time slot to eat.