Bear with me because this may be a bit of an unusual situation. My wife and I have credit card points which we would like to use on a European trip. The first stop is Dublin. We will be traveling from MSP through Amsterdam to get there. The return flight leaves from Dublin, connects in Amsterdam to return to MSP. We are thinking of possibly spending time in Belgium. What would happen if we just went from Belgium to Amsterdam (The credit card points require we make a round trip to a European city from MSP) and didn't use the tickets for the first leg of the trip home? I know airlines don't like this sort of thing, but what are the possible problems we might face?