Agents in MCO often make a joke PA by saying," We can't pre-board family with children today, because if we did, it means we are doing general boarding!"

You'll see that you're not the only one with with 3-4 kids traveling together. Often time, 2 adults or a single parent travel with 3-5 kids... So don't feel that you're the only family with kids on that particular routes (MCO-DTW/MSP/MEM vv)