The other locked huts
The Yolkfolk's huts are all locked. Pressing B at a door does nothing.
Nudge 1Where to look
The keys are lying about the village, each one named on the status screen (the inventory button) once Dizzy carries it.
Nudge 2A stronger push
Denzil's door key is on the ground floor, Daisy's near her hut, Dozy's inside Daisy's hut, Grand Dizzy's in the meeting hall; Dora's and Dylan's are harder to reach (they have their own hints).
Show the solutionThe whole answer, with a video
Carry a hut's key to its door and drop it there (B). The key is used up and the door opens: B at the door goes in and out from then on. Pages for the tricky keys: Getting up to Daisy's hut, A key out of reach near Dylan's hut, Finding Dora's door key, Grand Dizzy's door.