Ok. One more question. Am I correct in thinking that getting frequent flyer miles for every mile you fly only occurs when you are a member of an airline's specific frequent flyer program? For example, when someone does a MR on a Delta flight, let's say 6000 miles RT, they get 6000 FF miles if they have a Delta frequent flyer account. In other words, I can't get FF miles based on how much I fly through SPG except for the cost of the fare that I pay for using the card. So, do people that do MR's have FF accounts with multiple flight operators? Is there any cost to become a member since it's not tied to a credit card? Sorry for all the beginner questions, but I'm quite new to this. Thanks.