Being stuck in a small car or plane seat for hours is tough even for an adult. (maijasmommymoments.com)
Protect the car seat or plane seat with a towel or waterproof mat, just in case. (bounty.com)
Since most children who are old enough to ride in boosters can sit in their own plane seat without a child restraint, you probably won't need to use it anyway. (bestcarseathub.com)