The offered trip was very reasonably priced with a combo of miles and money. But, it was R/T to GRU. There was no option to return from GIG. There was a stop in BOG, but short, maybe too short. Someone at FlyerTalk posted a pic of a Business Class that was dark and narrow- not appealing at all.
The comments I have received there are quite discouraging, not only for Avianca, but for the Lifemiles program.