We're going to Florida next year, DSs will be 11 and 7. 11 year old won't need a seat but 7 yo may. Hire company charge around $70 which is a lot of dead money. I can get the Trunki booster backpack for £40 which he will be able to take on the plane as his carryon luggage with tablet, activities, snack ets, or an inflatable packaway booster for less which would go in suitcase.
Any one used either of these and can offer and reviews or advice on which would be better?