Congratulations on getting the visa, though are you really saying that you've been granted a fiancee visa but you are actually getting married in the Philippines before coming to the UK?
If so ignoring the fact that it's going to cost you an extra £465 in visas which you didn't need to pay, it might make life a bit interesting as I guess technically your wife's visa will be invalid when she enters the UK - IO could suggest you weren't honest when you applied for the fiancee visa.... Also not sure what the BIA will make of it when you come to apply for FLR later.
Maybe someone else on here did the same and can say if it caused them problems or not.