To save me burning a coaster, do you know if traditional DVD players mind having files or folders sitting outside the usual VIDEO_TS and AUDIO_TS. Will they just ignore the contents ?

I am creating a handout DVD for a vintage car rally I attended a while ago and as well as having a some video footage and DVD photo slideshow I thought it's would be nice to provide a folder on the DVD with the high res master shots for those that want to print them or something.