Don't hold your breath on the CLE-RDU. Even if you were Gold, Plat or Gordo, you'd never get upgraded on CO. It looks like a pure junglejet market.
As for the NW segment you mention, you fail to say where to, what day, what time. Hard telling without at least some of those details.
Sorry there's not better news, but welcome to FT!
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Not sure where I'm going, but I'm getting there fast.