I don't have an answer yet, but IMO, Wild Beyond the Witchlight wants to be a sandbox, without providing meaningful choices. [spoilers ahead]I really enjoyed reading Wild Beyond the Witchlight and would like to run it for one or both of my groups. Any advice?
I picked up several other fey books to flesh it out. Fey Encounters is full of one-page encounters that can be dropped in at will, for instance. I also like Cawood Publishing's Monsters of Feyland.
Domains of Delight should definitely have been a chapter of Witchlight, which I suspect it was originally. Bump it up by four dollars to pay for the extra page signatures, if necessary. Maybe they will, if they ever release a remastered version of it.What would I recommend? Ditch the advice the book gives of running everything in order, don't be afraid to provide information to the players, so they can travel the Feywild with objectives in mind, instead of being dragged from one encounter to another, and read some other fey books, so you have some foundation if/when choose to just wing it instead of following the book. Domains of Delight is a good source, and @Whizbang Dustyboots gave me some recommendations I didn't know (thank you Whizbang!)