A relative is going to fly Air Berlin between the US and Germany. He doesn't have any frequent flyer accounts and is unlikely to fly much in the forseeable future, so I am looking at what to do with the miles he could earn with that roundtrip. I suspect he booked a discounted economy fare, which will likely only earn 25% RDM with AA or BA. Not sure about Air Berlin's own program. My current thinking is that I could create a BA/Avios Family Account (need to do that anyway to merge my wife's and my Avios) and add him to it, so I can use his miles and reimburse him for the benefits I derive from them. Any other suggestions?