Originally Posted by
leonidas
.... United should really get rid of all this song and dance and simplify their currency. Travelbank, FFC, ETC - three currencies with different rules for each is terrible.
FFC and ETC (except for transferability) have very similar uses and have principally been just usable for flight booking. Not for auxiliary fees. TB is just UA flights.
The bottom line is none of these currencies can be used for auxiliary fees, you were very lucky to get an agent to do this.