We are staying at the Beijing Park Plaza Wangfujing and need to get to PEK T3 by 10 pm.

According to your landing time, you are advised to take shuttle bus line 3 to get to the International Hotel first. The operating hours of this bus route will until the midnight. You can catch it. The ticket fare is CNY 24 per person. Then take a taxi to the destination. The cab fare is around CNY 15 at night.