Did you get an email about an uncleared waitlist or upgrade request? You should get one just before T-24.
As noted, though, your priority is "correct" until the gate (practically speaking you will probably get jumped by CPUs unfortunately, but you can't help that) - you should get added to the gate list (if applicable) before it is run with the priority WBI. That will place you ahead of any CPUs for what remains at the gate.