Yes they have Grab and Go items in the morning at Wailulu. For morning 7 - 11 AM it is a Quick service style venue.Does anyone know if you can get to go coffee at the Wailulu place at the Island Tower?
They have Joffrey's Cold Brew - $5.29, and Fresh Brewed Joffrey's Hawaii Kona Blend - $4.99. Espresso-based Beverages - Espresso, Cappuccino, Caffè Late, or Americano - $4.99 to $6.49.
link to breakfast menu https://disneyworld.disney.go.com/dining/polynesian-resort/wailulu-bar-grill/menus/breakfast/
Dave