As a then 50 year old, I had no problem climbing the falls. It is a mountain stream, so the water might take a moment or two to get us to. Wear good water shoes that fit well and take a disposable, water proof camera. Also have a water proof container you can wear to carry your valuables like your sea pass card, money, etc. (I wore mine around my neck). Be warned that the guides may try and pressure you to buy a DVD of your trip.