Europe does not reward vague plans. In December 2025, most Americans still smash into the same wall: the Schengen short-stay limit, which is usually 90 days in any 180-day period. You can be charming, solvent, and well-intentioned, and the math still wins. So this is the grown-up version of the conversation. Not "visa hacks." Not "border runs." Not a romantic fantasy where you just keep moving until the rules get tired.