Most people go to lounges if they fly business class or First class. They may even have status to go along with their airline or airlines’ alliance allowing them to venture over to the lounge.
Then show the attendant the app or the Priority Pass. Now you are ready to sit, eat, drink some good beverages such as coffee, tea, beer, wine, or liquor, and enjoy until your flight time.
You can show up later to the airport and maybe eat some airport food which costs money, or show up a bit earlier and relax with the food that comes with the pass.