As an accountant (albeit in a different industry), I am a bit skeptical of her claims. First, a financial analyst is not an accountant, as the analysts in my company are very quick to point out. I would question on how much she actually understands GAAP standards. If I remember correctly, there are perfectly legitimate reasons to record a discounted gift card at face value. The $105 offset could be showing up in a different place. I don't work with gift cards, but I recall them being a pain to deal with the accounting. Also, the allegation is that almost 60% of the revenue is made up ($6 billion of 10.6 billion). That would be one heck of a blind eye by the auditors. Plus, that is saying parks and resorts only made 4 billion in revenue. Revenue, not income. Considering what I have paid for my onsite stays, that seems unlikely.
Not saying there might not be some shady stuff going on, but I have a hard time believing it is as large as claimed.