The Alola Photo Club is accessible after reaching Hau'oli City. Once there the player can take photos with their Pokémon. As they go on their adventure, they unlock new backgrounds and and stickers to decorate their photos.
After the player's Pokémon evolves Rotom will invite them to go there with their "newly evolved Pokémon". This prompt allows the player to take photos with their Pokémon without leaving where they currently are.