Old Gold: thanks. We are returning on CO9056 (COPA codeshare) leaving at 4:50 am! But at least that gets us back to CLE the same day. But I still cannot confirm the type of aircraft; image it will be the 737-700 you mentioned (12 F/C, no BF configuration).
SteveM: I flew CNS-GUM this past summer. Up front was called "BF", however it was in domestic FC configuration! Neat way to get around that "no upgrades unless no BF" thing.