do we need to play 'indifferent' to learn certain things about the family? (Noelani, Pamela, Elizabeth, Lee, etc.)

Do you get any information that you wouldn't get in a normal playthrough through playing indifferent? Do we know everything we need to know about the family from just playing normally?

From what I saw for my findings in Step 1, the changes mainly just include cutting scenes off early, or changed lines here and there to denote that there's none of that connection you'd see in a fond/crush playthrough.