My wife and I are planning to fly ITA from AMS to PMO next April. We are both DL platinum. I presume we will be able to select seats and check our bags for free on ITA--am I correct? So in booking an ITA flight online, what type of economy class should I select? It seems that Economy Light, which has no ability to check bags, make changes, or select a seat, should be sufficient if my DL Platinum status gets me a checked bag and seat selection. Any advice on how to book an ITA flight within Europe (so no DL codeshare and I don't appear to be able to book the flight with skymiles)? Thanks.