What I did was arrange everything before I left the UK. Travelled to the Philippines and exchanged CNI at the embassy in Manila and then set the wedding up (marriage license / paperwork etc etc). Got married and stayed a further ten days. Worked well.
The whole thing was well organised in advance as it wouldn't have worked otherwise.
It took about 2 1/2 weeks in all including travel time.
Basically I landed in the Philippines just about 5 days before we married.
Landed very late on wednesday night, around midnight. CNI was exchanged over the thursday and friday as it took two days back then in 2011. Set the marriage licence up on the monday. Married on the tuesday. Remained in the Philippines for a further 10 days.