Cheers for starting this thread as I'm facing this conundrum right now for some international and domestic Azul bookings in October
Went to add my girlfriend's UA number to the booking and..... Cant see any way to do it. If we remember at the airport, guess we'll try it there.
I have an ol' CPF and TudoAzul number some place.... I dont have any status/miles stashed with neither Azul, TAP or UA... So may just pick one out of a hat