I had to get a recent baptism certificate from my local church and a letter from the minister stating it is okay for me to marry in a Catholic Church. I think the Catholic church makes it so difficult to get you to consider converting to a Catholic. I paid 25,000 peso's for a aircon church ( I really didn't want my British guests melting) and we are ver glad we paid 25,000 for the wedding co-ordinator who made it a hassle free day. I paid in excess of 6,000 pounds for our wedding day, but the way I look at it is that it is far cheaper than a wedding in the UK. Good luck, I hope all goes well!