Consider a party of two passengers that is content to share a room, and wants to stay for two nights. Two passengers == two eticket numbers. So use each passenger's eticket number for one night, and get two nights for free?
Kids (lap infants and child fares) have eticket numbers and are not excluded by the T&C's
https://discoverqatar.qatarairways.c...s/PLUSQATARTNC . One adult plus one lap infant or child == two eticket numbers == two nights for free?
What a remarkable promotion!