I'm eagerly watching for reservations to open for this place.. I'm not exactly sure what this dish is, but it looks good and I am probably going to order it when we eat there when we are down there in September..
No reservations will be available, it's fast casual (cafeteria).
The only place for reservations in AK are: Tiffins; Yak & Yeti; Tusker House; and, Rain Forest Cafe. Tusker is buffet with characters, the rest are table service.
This means no reservations or table service in Pandora. Pandora will have the Canteen mentioned above and a window service: Pongu, Pongu
https://disneyworld.disney.go.com/dining/animal-kingdom/pongu-pongu/