We're flying back to the Midwest to visit family in December. We didn't buy a seat for baby since he'll only be 6 months at the time. I've heard it's best to gate check the car seat but my question is, do you just fasten it to the base and check the whole thing? How does that work?
Also, do they give you a hard time about formula? I'm concerned they'll be weird about a large amount of a powdery substance.