Pokémon Pokopia Celebration Event was a Pokémon GO event with 15 featured Pokémon and 4 raid bosses. Here's what's actually worth your time, which bonuses to stack, and whether it's worth clearing your schedule for.
What to prioritise
If your time or resources are limited, Ditto wearing a hat is the one to focus on — it's debut Pokemon. Also worth your attention: Ditto wearing a cap (Debut Pokemon). Keep an eye out for Ditto wearing a hat, making its Pokémon GO debut during this event.
Bonuses worth using
This event runs one bonus: 2× XP for spinning PokéStops10× XP for spinning a PokéStop for the first timeIncreased chance to encounter Shiny Sudowoodo and Shiny Zorua. To squeeze the most out of them, stack a Lucky Egg to double the XP bonus.
Shiny hunting
With 18 shiny forms in the pool, this is a solid shiny-hunting opportunity — increased spawns mean more checks per hour, so prioritise volume and don't skip the ones you already have.
Is it worth your time?
Worth a look. There are meta-relevant Pokémon on offer, so it's worth dropping in to grab the priority targets even if you don't play the whole thing. Note: this event has already ended — it's kept here for reference and for when it returns.