General consensus is that the problem isn't getting TO the fairy world.
But leaving.
Yknow how they say "Don't drink the water in Mexico"?
Basically. Don't eat or drink anything in the Fae realm.
If you want a (fairly) good book on fairies I could recommend A Witches Guide To Fairy Folk, but truly, it's never much appealed to me, and it's the only book I've read specifically on fairies. So I'm sure there are better ones.
Cheers.
Bookmarks