Sinon

Use a link heart while the feebas holding a prism scale.

You can find Buneary in the Evergreen Forest as static encounter or later in the game at the Goldenwood Park.

Yes shes only there at night.

No as I wrote before you need exactly 10k no more no less.

From Cairo on route 4 you need exactly 10k red essence and talk to the chespin in the house.

The Pansage encounter ist currently bugged so you encounter Panpour at the night and morning, but you can find it in the Goldenwood Forest before you do the restoration quest.

For me mono poision was the easiest type in intense, but i haven't done every monorun yet.

She should be there at day regardles of the chapter.

Its after Amber.

Should be in the 9 Badge chest in Whispy Ruins but IIRC you need strenghth to get there.

Yes its every day a roll of 3.33% for him to sell the Blue Moon Ice Cream. IIRC its costs 20k than. You need 1 Blue and 5 other ice creams or 25 normal or 23 strawberry. Or take the slide 67 times should work too.

You need exactly 10K. You can buy the crests or dump some essence in the den at the wetlands

The fastest way is giving espurr ice cream and when you have a blue moon ice cream its ~20 (stawberry is a bit better than vanilla or chocolate) times more efficient than the other 3 and they are the 2nd best option. But when you say you don't have ice cream you lose points.

Here is the list from the walkthrough.

its in the phasial cave as an 1% encounter, get it there yesterday on my poision only run.