According to CinemaBlend, Ralph's cameo is accessible by heading over to Risky Reels. Once the drive-in theater's screen is within full view of players, they'll be able to see the short cameo, which user LootLakeBR posted to Twitter. The article's sources indicate that Ralph's cameo at Risky Reels is the entirety of the character's role in the game at this point, and he is not playable. However, the article does later cite rumors that an event centering on the character may happen soon, leaving open the possibility that the character will one day -- like Thanos before him -- be playable.
Considering Thanos' appearance in the game, Disney seems fine working with Epic Games, so the chances of a Ralph-centric event aren't particularly bad. However, only time will tell if players will see Ralph face off in a battle royale.
Directed by Rich Moore and Phil Johnson, Ralph Breaks the Internet is in theaters now. The film features the voices of John C. Reilly, Sarah Silverman, Taraji P. Henson, Gal Gadot, Jane Lynch, Ed O’Neill and almost every Disney Princess voice recorded.