I dont want to append my questions to an existing Mutianyu thread that has a misleading title as well as personal opinions on irrelevant topics, so I start a new thread for some basic questions.

We will arrive PEK at 4:30am !!! on an CA flight from IAH, flying in F class.

Our hotel is Double Tree by Hilton at Guang'anmen Outer St, Xicheng, Beijing
Just west of the West 2nd Ring Road. Hotel is 2 km from the nearest a subway station by the way.

I figure it might be a good idea for us to go from airport directly to Mutianyu?

Alternately, this day trip tour is quite attractive to me, as it will visit both Mutianyu and Ming Tomb, for only 195 RMB pp including the following items:

價格包含項目
酒店接送服務
豪華空調旅遊車
景點門票
優秀導遊
中式午餐
旅行社責任險
購物站1-2個

http://www.tour-beijing.com/big5/bus...great_wall.php

What is the customary tips for the Driver/Guide?

Alternatively, what are your suggestions for Airport - Hotel transportation, other than the obvious (taxi)?