I’m not sure about the Blu Ray, but I looked at the subtitles on the Google Play version.
It has subtitles for BB-8 driving to the falcon and the woman at Maz’s castle despite not having any dialogue. (They aren’t interesting; just stating the obvious: (BB-8 chirps) and (SPEAKING ALIEN DIALECT)).
I wonder what that’s supposed to mean? Did they intend to give us a mix with both but gave us a mix with neither?