Update : They called people for boarding in this order - Diamond, Suites, Platinum, FTTF, and then zones. It didn't matter what time you got into the building. And starting with allowing us into the terminal, they checked our boarding passes every step of the way to ensure we had the proper priority.
And as Platinums, we went straight to our rooms, dropped our luggage, and got out. We passed an officer in the hallway to our cabin, and he greeted us warmly and seemed to have no problem with us being there.
In summary regarding the Panorama and Priority:
Adherence to arrival time: Yes
Boarding in Priority Type order: Yes
Priority bag drop-off before 1:30: Yes