Called my agent today and decided to leave things as they are. It's not worth the hassle, and we are happy with the cabin we booked and don't want to take the chance of losing it should we cancel and try to rebook elsewhere. Plus, I've dealt with this agency before and they have always been good.
The TA explained exactly what you guys just did. Thank you very much for your prompt responses.
I'm just thrilled to be able to go on this ship in October! Deals or no deals, extras or whatever.