Hi! I will arrive in San Fran on May 1 until early May 5. I was thinking about booking a tour to get all of San Fran and hear some history, but I've read that large buses aren't convenient b/c of the traffic and narrow streets. Thus, they don't allow tourists to get off and take pictures. So my question is, what is your recommendation as to getting all the sights of San Fran? Should I do my own tour or is there a tour (in a mini van) that allows passengers to get off to take pictures??? Thanks!!