Lets just say some FR airports and agents are better at following the rules then others, makes it very difficult for some airports though who then face mroe arguments from angry PAX who said that this is not the way it is from their originating airport.
Personally, I think FR need to reassess this situation. Duty Free (one bag) should be allowed in addition to hand luggage. However - realisticly say 40% of the flight purchased duty free - think how much weight this going to add and more fuel that will burn?? Multiply that up to 68 million pax a year, thats got to be a lot of extra fuel burned due to that extra bottle of vodka from tax free shopping!