It was easier travelling with my then 3 month old than my now 7 month old - she was easily soothed with the boob, slept through most noise and didn't really react to her surroundings, as she long as she was comfortable and fed. Now she's aware of everything so I imagine it'd be different.

Do what works for your family. Every baby is surprisingly different, as much as they have similar needs. Once they arrive, we all kind of wing it until we find our groove. Plus, we're more informed than previous generations thanks to the internet - I've taught my mum stuff that she admits she had no idea about...I feel like (reputable) sites have given me better advice than most people lol