Hi AJS In other CFO center, they ask for a photo of you with your other half but I went to SMEF-COW in Aurora Blvd and all they asked from me were my ID (my driver's license), Birth Certificate and Marriage Contract (both from NSO) and my passport and photocopies of each. I was late too, i arrived about 8:20 and the film viewing started already. The lady in the reception, told me to go straight to the film viewing room and just complete the form after the film viewing. She did the photocopying for me too.

For more info, check this out: http://www.cfo.gov.ph/cfosmefcow_guidelines.pdf
You better call them before you go.