I have done ziplining many times. This is very organized. We had a group of 20 people. The guides are very helpful and show you a map off all the runs and what to expect beforehand. Safety is top priority. They have a guide at every run, so there is no waiting in line for others. Some of the longer runs have a bit of a line, but compared to what it could be....
They will let you use a GoPro. If you have one, use it. There is a camera at only one run and they charge you $10. If you have a safe place to store your cell phone, you can bring it. But you can only take pictures if you are not on the lines. Both hands will have giant gloves. They will not let you bring a camera. At the end, they offer you fruit (pineapple and coconut) and a drink. I'm not a coconut fan, but the pineapple was delicious.
Amazing trip!!