When I rented my car yesterday, I asked about the blue parking disc needed in Marigot. I was told that only residents need that .... and, since I'm not a resident and I have Dutch side tags, I needn't worry about it. I hope this info is correct.
No, not correct. Everyone needs the blue disc if you park in "blue parking" spots in Marigot. If you don't have one, just park in public lot or the lot in Galis Bay near the Sports Complex and take the shuttle bus.