No tickets at the gate. Ever. Book online seven days ahead with your passport number, enter from the south, exit north into Jingshan Park.

English interface available. Do not use resellers.
They sell out in minutes on weekends and holidays.
It becomes your ticket; you scan the passport at the gate.
And still requires the passport.
Except public holidays. This catches people out.
One-way flow: enter through the Meridian Gate (south), exit through the Gate of Divine Prowess (north). There is no re-entry and no exit back through the south. Your car should drop you at the south and collect you at the north — a detail that causes a lot of confusion at the end of a hot afternoon.
The Forbidden City is 980 buildings and most visitors see eight. The eastern and western palace courtyards — where consorts lived — are almost empty and far more atmospheric than the ceremonial halls. Give the central axis 90 minutes and the side courtyards two hours.
Tell us your dates and what you actually want to see. A guide who lives there replies within 24 hours — with a plan and one clear total.