Good day, i am sorry you had an experience like this but first of all , lets be honest, none of our waiver says that you pay 1000$ , but if you damage the Machines while you are riding and you are at fault , you are responsible, this is why you were charged 75$, the jetski was flipped and also has damages to the outer shell because of you not following instructions, also there is a *arezone* for riding in which you should not go out of because of the fact that there is coral reefs out there , you failed to keep in that area as well.
Before the jetski tour was started ,the rain was drizzling and we both agreed to wait for a few minutes which we did and it stopped, so there was no rain or lightning at the time. However after the jetski, the parasailing was canceled because of the high winds and you were refunded for that. The price you paid was for 2 persons and includes private roundtrip transportation from your resort , also viator takes a percentage from wvery booking , so thats why you were refunded for that amount and it was explained in many ways to you.