If we would like to do the Toboggan at the Great Wall, is this possible?

Yes, you can take the cable car up the Great Wall and take the toboggan down. Just let your guide know this in advance and he/she will arrange for you accordingly. However, we would like to draw your attention that the speed slide drops very fast and there is no staff controls the traffic flow on the site. If two travelers take the speed slide at a short interval, unexpected situation would happen sometimes.