Fortunately, I have been granted 7:00 am or earlier check in at Sheraton Park Towers more than once as a platinum as recent as this year (on both paid/award). I have not tried to pull in a 2:00 am check-in. If I need a hotel before 5:00 am, I book the previous night. YMMV, I would not bank on it unless I had clearly communicated with the hotel.