Hi, they don't have microwaves, we fly April from WA to Vic with a then 5 1/2 mth old. I'm BF but took bottle of formula with me in case. I did manage to bf once seated and, locked in as we were taking off, she slept a bit then woke screamed during the flight, settled gave hr bottle which the flight attendants just gave me a cup of boiling water to sit bottle in. She managed to fall back to slepp and slept through the whole landing. I do know though that the take off shouldn't affect their ears it's the pressure with the landing that does. I know for myself with a cold landing is awful on the ear drums.