Unpopular opinion but I don't think kids under 10 years old ought to be allowed in a cabin higher than premium economy pretty much ever. Premium cabins are designed to provide a tranquil and upscale atmosphere. Passengers choose J & F for privacy, comfort, and peace. Unfortunately, the presence of young children can disrupt this experience. Many premium passengers also use their time on board for work or rest. Crying babies or noisy toddlers can make it challenging to concentrate or relax. By implementing such a ban, airlines can ensure that premium passengers can maximize their productivity or rest during their flight.