Stardust during Go Fest event

most efficient way to grind dust is just to go to high density area and grind.

We honestly don't even know what the bonuses will be...I really hope Niantic doesn't disappoint and give a pittance when they say "Bonus" dust...

I think everyone would agree the anniversary boxes are a joke and if "Bonus" means +1 candy like the last event, it would be an epic fail for the Go Fest event...

I think the best outcome is if 3 bonuses can get unlocked, then dust, exp and candy is best since walking and hatching has already been nerfed with rare candies...You can also only walk so much in 4 days so I don't think that's as good as pure dust, candy and exp to grind for candies and exp...

Also, this way, hatching eggs alone can get you the bonuses doing just 1 activity. (If you don't grind which I don't...)...

There is some talk that only 1 bonus will apply, but this blurb about securing a variety of bonuses makes me think there can be 3 bonuses...Also, what if it's grass, grass, grass...would that mean the bonus is 4x as good so 2x, 3x, 4x or even more? They should really clarify.

"
or other Pokémon- types to secure a variety of other bonuses?
"

What double stardust event?

Last I heard it was bonus stardust which can mean anything. And going by the last time when they said bonus experience from egg hatches it turned out to be triple experience.

So we have no idea what the bonus dust will be.