Everyone is able to do this zip line, it is not very intense so maybe the adrenaline junkies should try the Skyjump off the stratosphere. I read online that it's approximately a one hour wait AFTER the booked time. So our reservation was at 1:20 we were finished at 2:20. I would recommend the higher zip line because it goes faster and more distance across Fremont. The most intense part is at the end where they stop you with 2 hard pulls so just keep that in mind.