we will be in Shanghai Fish Inn Bund in 639 Middle Henan Road. where can we buy sightseeing bus ticket and how much

Hi, you can walk from your hotel to Nanjing Road (east) bus stop, at the exit 2 of subway line 10, Henan Middle Road, to take the bus directly.

Near the bus stop, you can easily buy a ticket at the nearby ticket booth and it costs CNY30 per person, valid within 24h.