We were on the Magic in December and had an experience similar to CastawayCayLover. We showed up 15 minutes before all ashore time to the location in the app (Animators Palate). They line the walkway around the restaurant with chairs facing each other so you can sit or stand with your group in order of arrival. There were 10 or so families ahead of us. The early Disney excursions did not fill the first tender so we made it on there. We were on shore and at the desk of our Dive excursion booked on our own within 30 minutes of all ashore. If we had been on the second tender it would have just been 10 minutes or so later. We were on shore, but I believe they started "open tender" with no need to line up in Animators 30-60 minutes after all ashore.