There are no electronic parts in the RB bodies. (only a metering prism or powered back would have electronics, but even so, the camera body itself is not electronic) It is probably fine except for the screen and the polarizer as you mentioned. The polarizer can probably be removed with a dremel tool. The film is probably fine; who knows, maybe you will see 'creative effects.' I have dropped my RBs umpteen times and never had a problem. As far as water goes, just dump the fish out and let it dry out The lenses are well sealed, I doubt you got water in there. If you did then it may need to be opened up.