There's no fairy to jump on the island anymore, and Bottled Fairies are now food (!!!)!
You'll need someone that can fly you over the sea, up to Wyvern's Peak island.
Well I'm a fucking idiot, thank you for enlightening me
After I fly there with a fairy fly ability, I cannot get into the Wyvern's Peak Island, the mountain has a purple crystal up front blocking the way.