Unbelievable. I did this by myself - in the middle of winter.
If you are after a safe way to do a self guided trip this is the one for you. Picked up from the hotel, dropped at the wall and left to your devices all day - before meeting at the pre-arranged meeting place. Safe bus, Safe guide. Would recommend to everyone.
We chose this tour because it was self guided once we reached our destination. Most of the people on our bus were on a guided tour so we had the benefit of some information about the Great Wall while driving out to the site. We were able to spend as much time as we wanted walking the wall before taking the cable car back into town. The guide gave us excellent information when he suggested walking up and then taking the cable car down as it is very steep and a bit dangerous to walk down. We really enjoyed our time in Gubei Water Town even though it is mostly build new for tourists. We took some really beautiful pictures.
Spending the time to drive this far out from Beijing is totally worth it if you want to see the Wall without a throng of other tourists. The Wall itself was fabulous, but it would have been nice if we would have been directed a little more clearly as to where exactly the chairlift was located and how to get there either via shuttle or walking. We paid for the shuttle and I've no idea if that was already included in our tour or not but that was a small detail. What caused the most stress was the fact that we didn't receive the confirmation notice 24 hrs before the tour and we were uncertain of where / when our pick-up would be. After much effort on our part we were lucky enough to have a Chinese hostess who helped us with a phone call to get the confirmation we needed.
My tour guide was Cactus, she gave me all indications as what to do during my quick tour in such an amazing town and the Simatai great wall. For me the timing was perfect because I was short in time, However for other tourists who like taking lots of pictures and strolling everywhere especially the entire Simatai Great wall, there is not enough time for that. However I still recommend it because it is an amazing tour.