Need help: last minute san fran alcatraz tour?

i am going to san francisco between july 29 to aug 2 and want to do alcatraz island tour.

I try to buy tickets in advance online but everything is sold out. does anyone know where i can get last minute tickets? Thanks.Need help: last minute san fran alcatraz tour?
City Sightseeing office at 2800 Leavenworth has tickets. You can purchase bus/Alcatraz tickets over the phone or on line before you arrive.

http://www.city-sightseeing.us/sanfranci鈥?/a>

towing

san diego restaurants