zeeshan002 wrote:3. I would like to visit Happy Valley and Victory Kingdom in Tianjin as well, since they're so close to Beijing. Would I have enough time to do both in the same day while taking the train to and from Beijing?
I don't think it's possible. Victory Kingdom and Happy Valley is 30 minutes bullet train apart, you'll have to wait 20 minutes to get a taxi at both stations, Happy Valley is another 40 minutes from the bullet train station. They are in two ends of the city and it's hard to get around. I would skip Victory Kingdom because U-Shaped Coaster hasn't been operating for over a year now. The park is a ghost town and they simply don't have the money to operate it anymore.
Oh, remember to keep your bullet train ticket, you can get a discount on Happy Valley ticket.