Protip: you can come in to Brussels through Amsterdam. Passport control line in AMS is negligible (at least at 5AM, though I'm sure it's not  too bad at other times either), and it's only a 2h train ride straight from the AMS airport to Brussels.

That's a great tip! Early morning flights can be a game-changer, and the AMS to Brussels train ride is super convenient. Plus, you get the bonus of passing through two beautiful cities. Definitely worth considering for smoother travel and maybe even a quick stop at Amsterdam’s scenic spots. Safe travels!