Firstly, Quantum and Ovation are Royal Caribbean ships, not Celebrity and Quantum hasn’t opened for 2025 TP bookings.
I’m on Explorer right now and went to next cruise to book either Quantum or Ovation TP. Quantum hasn’t been released yet and will be available in the next few weeks.
Ovation is in the system but ‘down for maintenance’. I asked if this meant it was being cancelled and he said no, the HI to Vancouver cruise is still available. He said it should be viable again soon.