To get married in the Phillippines you need 3 to 4 weeks out there. It can be done in 3 weeks but its tight. We did. If your fiancée is under 25 she will need her parents permission.
To obtain a marriage licence you will need ten days.
You will need:
Affidavit to marry sworn at the embassy in manila. Book an appointment before you leave. Take your birth certificate, your divorce decree absolute/death certificate of previous spouse if needed and the written signed affidavit. You can make an appointment here:
https://britishembassymanila.clickbo...a#.VqjLiJqLTDc
Print out affidvit from here:
https://www.gov.uk/government/public...he-philippines
Before you travel to the Philippines get you're Fiancée to obtain a Cenomar for both of you. That is a certificate of no marriage entry in the Philippines. All she needs is the fees and your full names and addresses. You will need this to get the marriage licence.
You're fiancee will also need a NBI clearance for marriage purposes and either her voters ID or voters certificate. Please note these all need to be in the same address so if she has lived at different places and these ID's do not match she needs to get them changed all into the same address first. She should do this before you travel.
Once she has all these documents and both Cenomars. Book the embassy appointment when you know you are going to travel and make the appointment at the beginning of your stay. Its in Taguig Manila next to Makati. Best to arrive the night before and arrive there early due to traffic. You then obtain the Affivadit by showing your birth certificate and divorce papers if needed and paying the required fee. Please take the exact amount as they don't give change. You will swear on the bible or make a decree. It's your choice. The affidavit will be stamped. Keep it safe.
Then go to the local city registrar where your fiancee lives. and take the Affidavit and the cenomars and the other documents you have and request to book on the marriage counselling course. This is needed to get a marriage licence in many baranguays. Please let them know that you are only there for a short time so you get booked on one as soon as possible. You will need to make a few photocopies.
Once you have attended this you will be given the forms to apply for the marriage licence. You take all the forms you now have and go to the city registrar and pay the fee. Then you wait ten days and go and collect the licence. Then you are ready to marry.
After you marry don't forget to get the marriage licence endorsed by the NSO. the fastest way to do this is electronically which has a fee but the other method takes around six months. For spouse visa purposes you need a NSO certified copy.
Make sure there is a judge available or a pastor/priest who can marry you in the the time limits available.
Hope this helps.