Before it launched, Nintendo made sure everyone knew playing through the Pokémon Sun and Moon demo would net people an Ash-Greninja they could transfer into the full version of the game. However, like the Pokémon Alpha Sapphire and Omega Ruby demo, this demo has additional rewards and special events on certain days.
There are three additional rewards you can immediately earn in the Pokémon Sun and Moon demo after earning your Ash-Greninja. If you head to Ten Carat Hill after getting the ability to ride on a Tauros, you can catch three Pokémon during the Pokémon Catching Challenge to earn a Nugget and fight four trainers to earn a Star Piece. When you’re actually in Hau’oli City, you can head south of the Pokémon Center to visit Mahalo Trail and get three Stardusts.
The other items will appear in the Pokémon Sun and Moon demo on certain dates. A man outside Hau’oli City’s Pokémon Center asks you to visit him on October 19, 2016 and will give you 10 Pretty Wings when you do. You can talk with the woman next to the Melemele Ferry Terminal sign on October 23, 2016 for a second event. In the City Hall, a man with a Pikachu will celebrate its birthday on October 30, 2016. An event will happen with the police officer outside of the Ferry Terminal on November 5, 2016. Finally, on November 11, 2016, you can talk to the woman near the benches on the right side of the Ferry Terminal to wish her well on her trip. Note that these days assume you began playing Pokemon Sun and Moon’s demo on October 18, 2016, the day it launched. If you began at a later date, you can meet the man outside the Pokemon Center for 10 Pretty Wings one day after you first play, see the woman by the ferry sign five days after, meet the man in City Hall 12 days later, talk to the cop by the marina 18 days later, and see the woman inside the ferry station 24 days later.
Pokémon Sun and Moon will come to the Nintendo 3DS in Japan and North America on November 18, 2016. It will arrive a few days later in Europe on November 23, 2016.