Re: ハレムの入場料は、ミュージアムpassに含まれているのか否か？

museum passは使った事ありませんが、
公式ページにTopkapi palace and Harem apartmentsと書いてあるので両方行けます。

以下公式ベージより抜粋

Museum Pass Points
Chora Museum, Hagia Sophia Museum, Topkapı Palace Museum and *Harem Apartments, İstanbul Archaeological Museums, İstanbul Mosaic Museum, **Museum of Turkish and İslamic Arts, Galata Mevlevi House Museum, Yıldız Palace Museum, Museum for the History of Science and Technology in Islam.

*Harem is inside the Topkapı Palace and has a separate entrance.
**Due the essential maintenance works, the museum will be closed off the public.