Just to clarify - the Yacht Club has a table service restaurant called Ale and Compass Restaurant.
The Yacht Club also has a quick service area in its gift shop which is called The Market at Ale and Compass. Pre-COVID, there were a few tables inside where you could take your food to eat it, or you could take it with you and eat it elsewhere. I don't know if those tables are still open now, because from what I recall there wouldn't be many left if you blocked some off for social distancing purposes.
PP suggested that if you had a cabana booked at Stormalong Bay, and you wanted something to eat but did not find anything tempting at Hurricane Hannah's, "mobile order from the Market at Ale & Compass and just walk over and pick it up." So PP was referring to the quick service area of the gift shop, not getting carry-out from the table service restaurant.
Mobile ordering on your phone is just for quick service restaurants. It is not for table service restaurants.