I am booking a ONE4 and as part of it doing some MRs (not to go to a country but to use the segments allowed to rack up SCs on QF FF). My question is if I am flying eg LHR-DXB and then turning around and returning on the same aircraft/next flight DXB-LHR without entering DXB, should I avoid the taxes for DXB (other than airport/landing/use taxes)? Should I highlight this to the agent ticketing the itin?