My son has been cruising since he was 11 months old. Despite the covid shutdown, he's just completed his 12th cruise in April at 10 1/2 years old with two more booked. We've done Carnival, Disney, and Celebrity with him. I'm not sure anything can top Disney, and it really is a wonderful line. The food, service, and ships were impeccable. Seeing his face light up when Buzz or Mickey came around a corner were well worth the very premium price. That said, he has loved the Celebrity cruises we have done. He loves to draw, color, and in recent years, play video games. He thinks the camp on Celebrity is less repetitive than it is on Carnival, though he enjoys that too. He has always been a kid who woke up asking what time the camp opened, and begging to stay until the wee hours of the morning. Kids are different though, and your mileage may vary. Almost without fail, the camp staff on all the lines have been warm, welcoming, and friendly.