There is no doubt that the concessions at AV have gotten better over the years in both quality and selection. I like that EAA has brought in some of the local restaurants. I think it makes some of the other concessioners step up their game. The aforementioned Subway has been a perennial favorite. If you time it right there is little to no line.
As a lifetime member I really appreciate being able to trade in my dinner benefit for a couple of days access to the EAA pavilion. A cold drink, a snack and a place to rest my tired feet is great; especially late in the week.