Noise

It is sadly almost a universal problem and when interrupting your sleep it really is too much.However rather than fall foul of this family which in other respects do not seem troublesome I think ear plugs are the route to follow.

We lived in a lane leading to both the coastal footpath and beach so were subjected to random parking and families both off loading for their day out,and then returning to reload their vehicle ............and we swore every car had a dozen doors and these people carried all but the kitchen sink on their days out at the sea side!!
Very frustrating.
However they being strangers one could never really approach them because it changed daily.So at least I fully understand and I sympathise.

I have mentioned it to them - made a joke about having to replace their doors at some point! They are good neighbours in every other sense and I certainly wouldn't want to fall out with them. Their son is also an otherwise pleasant young man so I will try to have a friendly word with him. I was disturbed last night and again this morning so I think I just wanted to vent!!

Oldwoman it isn’t petty it’s annoying, but I guess when we are retired we stop being the annoying people who leave home early and slam car doors!
My friend has the same problem and she wears ear plugs, small squishy things, it took her a while to get used to them, but it saved her from falling out with her neighbours.
To be honest there is no way that the whole family can prevent you from hearing them leave home for work, but a friendly word about the sons car might be useful.

Have you thought about mentioning this to them without being aggressive? Perhaps they simply haven't realised.