u/Dutch-plan-der-Linde

I arrive at 7:30am - there are free tours operating it looks like but they leave at that time. Customs look like can take 2 hours or so. Does anyone know of a tour company or any advice in finding tour that leaves to see the wall at around 10am (or later) + another sight in the city like forbidden city or Tiananmen Square. Want to make full use of my long layover there. Many thanks