Your friends are lucky to have you doing the photos for their wedding!
SF is so beautiful. I didn't want to leave after an academic year I spent there, but wow it was so expensive even then. Worked as an au pair for some friends of family, had an entire floor to myself in a townhouse (well and the company of a trio of highly comical Siamese cats if I left the door open to them at night) but no way I'd be living in Presidio Heights after school on my kinda paycheck. I did miss the change of seasons, too, so I packed up and came on back east. Had to laugh when I was getting ready to stow my books for shipment, turned around and one of the kitties was sitting in an empty box with the end of a ball of string in his mouth: "Take me too!" There were no iPhones for the quick snapshot back then, but the memory is hilarious even now.