Niantic has announced that a Pokémon GO Special Weekend will take place from December 10th, 2021 to December 12th, 2021 and official partners will participate over three day event.

Pokémon GO Special Weekend Information!

Trainers, We're holding a "Pokémon GO Special Weekend" with our official Pokémon GO partners who are always supporting trainers! This "Special Weekend" will be held over three days from December 10th, 2021 to December 12th, 2021 (Japan time), with Ito En and Tully's as the target partners for Sunday, December 12th, 2021!

Which other official partners will participate will be announced in due course, so stay tuned! The second announcement is scheduled for early November.

What is the "Pokémon GO" Special Weekend?

This is an in-game event for Pokémon GO that you can participate in by using a "Pokémon GO Special Weekend" entry ticket that can be redeemed at official Pokémon GO partners. Each ticket comes with a promotion code, so register the code on the promotion code entry page before the day of the event to participate in the event. You can participate in the event from anywhere in Japan.

Event date and time

• Ito En/Tully's: Sunday, December 12, 11:00 a.m. to 5:00 p.m. Japan time

Event details

• When you use "Rock Incense" or a "Lure Module", Pokémon such as Iwark, Hippopotas, Dohmirror, Tsubotsubo, Unknown, and Isitsubute will gather. If you're lucky, you might even find a alternate-colored Isitsubute! You won't be able to find a alternate-colored Annon in this event.
• Different Pokémon are attracted to different Pokémon with different partners. If you're lucky, you might even find a different color form!
  • December 12 (Sun) Ito En/Tully's: "Hwanthe
• Target partners for the following dates will be announced in early November.
  • Friday, December 10: Korobohshi
  • Saturday, December 11: Mimirol
• An event-only time challenge will be available until 11:59 p.m. on Sunday, December 12.
• The following bonuses will be given to those who have a participation ticket from early morning on Friday, December 10 until 23:59 on Sunday, December 12.
  • Triple XP for catching Pokémon.
  • The effect of "Lure Modules" installed at PokéStops will last for 1.5 hours, and their effectiveness will be enhanced.

Where can I get a ticket for the "Pokémon GO" Special Weekend?

Please check the campaign page of each partner for details.

• ITO EN: https://i.pokego-cpvd.jp/
• Tully's: https://www.tullys.co.jp/cpn/pokemon_2021/ (Access available after 14:00 on Friday, October 15th, 2021)

What happens after I get a ticket for the "Pokémon GO" Special Weekend?

Please enter the promotion code on the ticket from the promotion code entry page before the event starts. During the event, open "Pokémon GO" and confirm that you have received the event-specific time challenge.

Tully's Coffee Campaign Details

At Tully's Coffee stores nationwide (excluding some stores where Tully's Card cannot be used), make a purchase of 700 yen or more (tax not included) per account with a registered Tully's Card in the Tully's Official App, open the barcode for the participation ticket from the Tully's Official App at the cashier and present it to an employee. You will be able to get a participation ticket.

You will receive a promotion code, which you can enter on the Tully's Official App and register the code on the promotion code entry page to participate in the event. After purchasing the product, you will receive the promotion code needed to participate in the event on the gift page of the official Tully's app.

If the barcode is not presented before the checkout, it will not be given at a later date.

Source: https://pokemongolive.com/post/202112specialweekend-jp/?hl=ja