I can't believe everyone elses sucky info on the best city in CA! So here's the scoop. I go back to SF, as a native, all the time and bring along newby's. Here's what I usually do. Drive or bike along the coast, PCH 1, have a cocktail or lunch at The Beach Chalet ��� 1000 Great Highway, San Francisco, CA, 94121 ��� 415-386-8439 or Cliff House 1090 Point Lobos San Francisco, CA. 94121. 415-386-3330 - if it's open yet. This is a good site for info on it and other things. theinsider.com/SF/Attractions/CliffHouse.htm
Then find your way to the Presidio, jus to drive thru the side of it and see the great views of GG bridge. I usually go thru the Seafcliff neighborhood to see how the other half live and get a glance at their gorg views of the GG bridge. You can try to find 25th street which rocks. Then, you can take a stroll on Chrissy or Baker beach, find your way to the Marina District along Lincoln Blvd?? I think. That will either lead you into Pier 39, embarcadero or the like. But I usually take a right turn, find Pacific Heights, drive around a bit and then make my way down to Union Square, hop on the Cable car at Powell and Mason and ride it close to Chinatown. I walk thru, visit some shops... then hop a few streets over to Northbeach. Visit Coit Tower, eat lunch/dinner whatever. See the Condor club, citylight booksellers, SF brewery and any other legendary place I can find while wondering the streets. To me, that's more fun than Alcatraz, Pier 39 and Ghiradelli Square which are sucky tourist traps - but if that's for you - those three you can reach by the cable car ticket you bought (by a full day) and are all next to each other. Neptunes is good food & view, it's at the end of the pier. Hard not to have a good time, biking, driving and walking around SF for a few days. There's also Haight and Ashbury streets, golden gate park, exploratorium... so many fun things to do.
Good luck w/ your wedding plans & have a great honeymoon.