I had no problems bringing food thru for the dogs, but I was concerned about feeding, in case they had to go
-- although some have said they have gone into the plane bathroom with a pee pad
My Bubba made a little noise on take of & landing on one leg - he sometimes has problems with his ears. I would just make sure you make sure the ears are good - you know what it feels like for us & you need to open your ears.
Don't forget to get a health certificate from the vet, you don't want that to keep you off the plane