I just bought a 51 can soft sider cooler at sam's to use in port. I was wondering if I could also use it to carry on drinks when we board-- I t does not exactly match the required dimentions listed in our documents because it is more of a square than a rectangle type of carry on. Has anyone been able to take a similar cooler on as a carry on? IT is 14in accross--15 in tall and 12 in deep. Im just worried about them saying it won't fit through their scanner and then what would we do? THanks so much!