Hi, we are currently debating to get the cares safety harness for our 19 month old to travel to New York or to use the car seat.
Pros of the harness are that we don't have to carry car seat around the airport
Pros of the car seat are that I think ds my be more comfortable in it during the flight to sleep. Also, we can them hopefully use it on transfers to hotel and also if we hire a car.
I can't find any info on whether we can use a uk seat in the us?