I'm hoping it doesn't take that long to get married. I'm going to Phils to get married soon, and I'm only going for 2 weeks. Think I might be cutting it a bit fine.
One tip I can give that I haven't seen here yet: Get your fiancee to apply for your CNI before you go there. This will give you less things to do when you are there. Actually in my case I am getting my fiancees sister to apply for my CNI as my fiancee is still in USA. You just need to give her a letter of authorisation, and other necesary documents.