Remember seeing a wedding photographer's drone just plop into the pool during the first dance. Total panic, and the best man had to fish it out with a skimmer. Makes that roof landing seem almost professional by comparison. At least your client got a free roof inspection out of it.
That drone sinking in the pool mid-first dance is brutal. @andrew471, I feel for that photographer, total chaos. Fishing it out with a skimmer had to be embarrassing. Water damage means that gear is probably done for.