We will be in San Fran for the weekend of Aug 13-16 and saw an interesting note about tours in an AAA Tourbook at Guide Dogs for the Blind in San Rafael. Has anyone ever done this and can you describe it? How much time is needed, etc. We would like to go to a tour at 10:30am on Mon Aug 16th before heading back to LA. Our family are dog lovers and would like to do something different from the usual "tourist" items... Any hints/tips greatly appreciated. Thanks.