Again, I agree

Organised & convenient lives in general is the key to happy children.
My response though was really to the OPs particular situation only - she is unsure about taking her baby because she will cry on the plane and they don't want to deal with parent swapping. For me, that really isn't a deal-breaker, not something I would base my decision off, they are merely minor conveniences which, as a parent, come your way on a regular basis. My advice really wasn't about her overall parenting, just this one situation