Update
We finally received the FCC. After a dozen fruitless calls and emails to member services and cruise planners I asked for a supervisor. The supervisor couldn't find anything either, but they did give me the customer relations email address. I emailed the issue yesterday and received the FCC today. Why I wasn't provided this avenue in the beginning is beyond me. Regardless, Princess is back in our good graces, and we look forward to many future Princess cruises.
We'll see how our insurance claim progresses. It's back in Princess's court to provide the quarantine order.