We did the SkyWalker zipline tour, and although we had poor weather and we weren't feeling really up for it (we had booked & paid in advance, there was no turning back) we had a GREAT time.
They provided us with raincoats because of the weather, and off we went. First a bit of offroading (we were glad not to have done both the offroading & the ziplining), and then we went up to the treetops for some excitement. The first one is always the scariest, but once you have done one line, you want to do them ALL.
Great, great fun!