We're planning to travel to America next summer for a holiday and to visit family. We haven't been since 2018 and things seem to have changed as now you have to pay to check in baggage and for seats.
There will be four of us me, DH, DS (5) and DD (2). We will need to take a pushchair and maybe car seats. If anyone has travelled like this before, how did you do the baggage? Could we get away with checking in one bag? I'm also conscious that if we take onboard 4 pieces of hand luggage, then we will have a lot to carry around the airport as the 2 year old obviously can't carry anything and the 5 year old will only be able to carry a small bag. Are there carry ons that zip together or stack for carting around the airport, but then come apart to go on the plane?
After thinking about checking in bags and paying for assigned seats, I do start to wonder whether we might as well buy more expensive tickets that have these things included. Are there any search engines that allow you to search like this?