I’ve gone standby to several Eat to the Beat Concerts during the 2019 Epcot International Food & Wine Festival. I’ve gone to the first show each time, and they have let us sit down early. (I’ve arrived maybe an hour before the concert.) We haven’t had to wait in a long standby line in the sun. There have been seats blocked off for the Dining Package guests, so they still have their reserved section. Disney might not do this for every first show this year, but they have done it for every show that I’ve attended so far.