I actually didn't know about the password... we were popping them into a consumer DVD player and they just played. But between fiddling with remotes and the audience seeing the OSD play/pause I just got sick of it and switched over to the laptop... which has no optical drive, but does have a torrent client :)

Ah, might just be certain distributors or studios then. I did a similar movies in the park event many times and we tended to show Disney movies.

I miss wrangling giant inflatable screens sometimes but quickly come to my senses.