Welcome home, again, Alberto. What a nice write-up. When my (then Honduran) brother in law received his Dutch nationality, we as family attended a similar session with him in his hometown Utrecht. Although it was definitely more formal (with an oath and all that jazz), it was also very festive and relaxed and not just a routine.
Of course it does mean that as a Dutchman I now get to make Belgium jokes about you. But luckily that goes both ways, you get to tell Dutch jokes about me. Brussels is one of those places that prove every time I visit that Europe works.