I should also think about why they specified "bluray full". Maybe they're looking for the best video quality. However, even if they have a physical Blu-ray, it's a legal copy if they own it. If they bought it legally, they can watch it however they want. If they're looking for a digital version with similar quality, the streaming services offer high-definition options which might be comparable.

Also, avoid using any markdown and keep the language simple. Double-check the platforms to see if they currently offer Interstellar with Indonesian subtitles. If there's a chance it might vary by region, mention that. Maybe suggest looking up the movie titles on those platforms to check availability in their area. Yeah, that should cover it.

I need to phrase it in a friendly way, not judgmental, just informative. Make sure to highlight legal options and maybe even suggest checking their local stores for physical copies if they prefer.