I am interested to see what it is like flying so far for us all, to get to such an active holiday. It is almost 14 hours flying time to Houston, then a 3 hour break for getting through customs and onto the next flight to Orlando, apparently another 2 1/2 hours flight time. So between having to check in 3 hours before flight time at our end, and the flight times, that is around 22 hours from airport to final airport, plus travel at either end.
Because we cross the date line both ways, we leave here at 5pm Friday, and arrive Orlando at 7pm Friday - if only it really was 2 hours!(Of course coming back it is leave Thursday, arrive home Saturday - that isn't so much fun).
I have done a much longer flight, years ago when I flew to the UK. We stopped in Cairns, Singapore, Abu Dhabi before finally making it to London. That was somewhere between 30 and 40 hours all done, I was so wiped when I got there!