When i went to pick up Sophia in Chicago she came back in cabin with me on Jetblue. I got just a regular carrier from Petco cause I didn't know if my Juicy woulda worked. On the flight home during take off she was nervous a bit. I think it was cause her ears were popping, i tried to give her treats but she didn't want anything. I would say take nutrical with you. I also gave her water so that she could swallow for her ears. After a while she calmed down but all she wanted to do was be in my lap and out of the carrier. The flight attendants didn't even see whne i took her out for a little while.
Congratulations and good luck!