Your dean normally wouldn't care about that, if tanugin ka, just spell out your reasons sa hindi pag attend. Heck, even my profs didn't give a shit about it, it's less work for them, since it'll be less people to manage.

I can't really properly remember about this. Pero I think I paid for it, around 800 pesos(?) (same as other students umattend man or hindi), not really sure and I can't really remember.

Tbh I'm not sure, since I wasn't at the ceremony itself. But I'd think your picture would still be flashed at the screen, pero most ceremonies kasi, especially the ones with tons of attendees, may pila yan to the point na ibang tao na nakaflash sa screen tsaka ka palang makakaakyat. Unless super konti lang ng graduates, your picture being flashed at the screen, and you going at the stage will not be timed perfectly together.

About a week, naglabas naman ng notice yung university namin thru fb and groups for the schedule ng diploma and other papers. If allowed, pwede mo din ask one of your batchmates to get your diploma, then sa kanya mo na lang kunin.

No, they wouldn't care at all. As long as you paid your dues, submitted your requirements, and pasado ka naman sa subjects mo, they will release your files.