Osprey Zipline Question

[Tys Mom]

I've booked the Osprey Zipline for my upcoming cruise.  I want to make sure I'm ready for the physical challenge, whatever it may be.  I'm not out of shape but I don't work out either.  Any similar over 50's ladies out there who are willig to share their experience? How strenuous is it?

 

I can't find any information on how many stairs or flights of stairs one needs to climb and where.  Does this course also use the elevator to the top?  How many stairs from the second line to the third line?

 

Thank you for your input.