Planning to travel to Majorca in June with my DS who will be 20 months and DP. I'm thinking about booking a comfort seat for him. Has anyone done this and would you say it's worth it for a just under 3 hour flight? He was fine last year but as an active toddler now I'm a bit worried. If so, has anyone booked one and know how it works? When selecting flights would I select 3 adults rather than 2 and an infant? No option specifically for a comfort seat. I assume it would be the same price as our seats is that right?