Hi! We are planning to travel London to New Zealand with a 5 month baby and 4 Yr old daughter. Outgoing journey is 2 layovers (3 flights) and I'm wondering if its worth taking the stroller or just baby carrier (child will walk) - worried stroller won't make it in the various holds through 2 layovers and end up getting lost or something! Are prams necessary for long hauls or more hassle? Thanks x