1. No, it couldn't easily go over 90%. Those in the industry understand that hotel occupancy is red-lining at 90%. You can't go much higher than that at all. It's much easier for it to miss and settle down a few percentage points than it would be to exceed 90%.
2. Jacksonville Jaguars couldn't sell out their stadium for nearly a decade. As many know that meant the game was subject to blackout from local TV broadcasting. Someone decided to put tarps over huge sections of the stadium and suddenly they were "selling out" the stadium and the games could once again be broadcast. Similarly, Disney knows how to move numbers around like anyone else. Likely they are not counting all of the unsold DVC "rooms" at Riviera as part of their occupancy totals. So, at the moment they might just be counting purchased Riviera DVC holdings as "occupied" rooms. If so, that would make the number "100%" occupied of the rooms available. Additionally, they do not count areas they are refurbishing towards their totals. Room demand down? Time for a "refresh" of a wing of the hotel. Now it's not counted in the total.
4. I have seen some of the largest discounts on DVC rental web sites in the past few months. Some flash sales have offered rooms such as:
Saratoga Studio: $120 (multiple dates)
Saratoga Studio Preferred: $150 (multiple dates)
OKW Studio: $126, $139
OKW 1B Villa: $216 (multiple dates)
AK Studio: $99!!!
AK Savanna: $160
AK 1B Villa: $242 (multiple dates)
Those prices were offered by just one re-seller. Many more were offered at varied discounts by many other companies. Increasing hotel occupancy numbers by selling some at less than half the rack rate price (sometimes even 75% off) does not mean that they are in more demand than ever before. It means people like deals.
Another key point is that hotel occupancy does not indicate interest in the parks. Many, people stay in a Disney hotel without ever visiting the parks. Notice that they keyed in on hotel occupancy rates rather than daily park ticket sales numbers. Usually it's good to look at what big corporations don't focus on in their reports to find out what isn't doing so well, because if it was they would be talking about it.