Hello there!! I'm sorry about the refusal of your fiancee.
As far as I can remember, my husband just send me a provisional booking from the registry office and there were no
wedding reception booking, wedding invitation, cake quote etc. and they granted me the fiancee visa way back 2009. I think it all depends to the case worker /ECO who handled the application.

Did your fiancee took the English test already?
Mind you my husband visited me three times in Philippines
and took a lot of photos for the application..I also printed the chat logs and skype photos.

I really don't know why they refused your application as to you've been meticulous in preparing for the documents.
How about just phone them and ask where did you go wrong and what else is to be proven that you're both genuine..

Anyhow, good luck for the appeal or better yet just get married in Philippines in that your soon to be wife can work directly that if she wants to.

Good luck and I hope everything will be alright in your application soon