My 18 year old daughter and I will be staying at the Omni the first week in Nov. I have researched tour buses but am still not sure which would be best for our needs. Our plane arrives at 11AM. I hope to be at our hotel by 1PM and since we have both never been to SF and we will be exhausted from a full day of travel we'd like to get overview of city. We'd like a hop on/off bus that has a pick up near Omni. It would be great if it was a few day pass and if it picked you up from stops frequently. Which one will be most convenient, most informative and fun? What time do they run to? Is it better to purchase these tickets online in advance or are there ticket sellers offering a bargain on the street? Thanks!