These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Accidental Innuendo: There's one scene early in the play where Fabrizio looks down aghast at himself, motioning towards his legs. He's actually referring to his clothes, but the innuendo becomes even greater when one factors in the relevant line in Italian, where he says "She can't love a little boy!"
Alternate Character Interpretation: Margaret's failing marriage with her husband is often played differently. Some play it as their love burning out and becoming distant, others imply her husband is abusive and the distance is to keep herself safe.