well, it's illegal to videotape with sound without 2 parties knowledgable in PA. That means the attendant and the john being in on the recording. I doubt that unless you do it covertly aka illegally that you'll be able to do that. I know that there are many little devices that ppl have used to record on from amazon etc, but it would be advisable to not promote the videos' and to protect faces, location etc. Unless you want a visit from the folks at LEO. I've taped plenty of private events for my personal memoires, but only if all involved were ok with that happening. I think it would be a slippery slope otherwise.