If you want your stuff to be left in a secure place, leave it on the bus. There is no place to keep it while you do tha falls and you can't carry it with you. There are areas where the water is waist deep, even difficult to hold your own camera. If you are going with a tour and on a bus, its pretty much finished when you reach the top. Beware, there are some local vendors when you finish and they can be extremely pushy, so just say no politely, that may work??