I checked my disc, and no, the extras do not have the same subtitles as the movie. It's fairly complicated:
Extras are in 1080p.
The deleted scenes and documentary are in English with optional Cantonese, Danish, Dutch, Finnish, French (Parisian), German, Italian, Japanese, Korean, Mandarin (Traditional), Spanish (Castilian), Swedish, Thai subtitles.
The theatrical trailer is in English without subtitles.
"The Grand Budapest Hotel" is in English with forced Danish, Dutch, Finnish, French (Parisian), German, Italian, Japanese, Korean, Mandarin (Traditional), Spanish (Castilian), Swedish, Thai subtitles depending on menu settings.
"Enough Said" is in English or German with forced Danish, Dutch, Finnish, French (Parisian), Italian, Japanese, Korean, Mandarin (Traditional), Spanish (Castilian), Swedish, Thai subtitles depending on menu settings.
"The Monuments Men" is in English with forced Danish, Dutch, Finnish, French (Parisian), Italian, Japanese, Korean, Mandarin (Traditional), Spanish (Castilian), Swedish, Thai subtitles depending on menu settings.