Really sorry to hear of the mishap. I would get it to a shop as soon as possible. There are electronic components here, there and everywhere. Me, being financially challenged would probably open everything up, place them in ziplocs with silica gel packs for 3-4 days in hopes that everything would dry out. But a shop can get it cleaned properly. Same with removing the lens so that others may be affixed once you get that one off. As to the film, just go for it and see what happens.