In porno films you don't always know if what you're seeing was shot in "real time" or not - sometimes it was but often it obviously wasn't.
As for personally - no, I had had lots of pussy before I ever had anal sex. Vastly prefer pussy. But if I was with a girl who would let me have anal sex with her but not vaginal sex, would I do it? Honesty compels me to say, yes, I would.