So good to read you are enjoying your CI. Must be overwhelming to hear so many sounds, but wonderful to hear your brain is recognizing Los sounds again.
Regarding noise while flying.. Just go to a lower program, or set the processor to a setting where it focuses on nearby sounds. (Or the "T" for the hearing loop..)
Otherwise, just take the CI off. Another possibility if you want to keep them on is to put earphones on and perhaps even listen to a book.. Another (expensive) solution is to use sound cancellation earphones. If you know someone that has them, try them out. The noise from the plane is really cancelled out, and you will only hear the voices of fellow travelers.
Lotte will not take them off, or even put them on a lower program.. But then, she is used to the sounds.
Regarding CI equipment. Make sure you have batteries /charger available. with Lotte we have backup stuff checked in, but the battery charger we carry with us. We need to charge the batteries even when our luggage is lost or delayed. After all, it could be days..
Enjoy your freedom.. ;-)