AAdvantage Aviator Companion Certificate - Best Use?
Just got sent an AAdvantage Aviator Companion Certificate (good for 2ppl on same itinerary @ $99 each). What's the best use of this? Does it apply to only Y fares or also J and F. It looks like it is for domestic r/t ticket on non peak / holiday days (extensive list of blackouts). Also it says companions cannot be upgraded. But as the main reservation holder could I be upgraded if I book in Y?