I am not a frequent flyer, so bear with me - I noticed when trying to book our Jet Blue flight on Travelocity that "seat selection is not possible". What does this mean in terms of myself, my husband and our twin 5 year olds sitting together? Of course at the very least one of us needs to be with each kid, and obviously we'd all like to sit together...anyone know how this will work? If I were to book the same flight through Jet Blue's website, I'd be able to select the seats - but the flight is $50 more per person on their site.