If you weren't driving it like you stole it just before stopping, and the last minute or two of your drive were thru apartment or subdivision streets at low speeds, then you should be OK to just park it & go. The 30-second cooldown is intended for when you stop immediately following a hard run.
That said, there's nothing wrong with erring on the side of caution. Turbocharged engines don't scare me (they make me all warm & tingly), but I do respect the potential fragility of a turbocharger. So I change my oil every 3-5k, depending on conditions, using full synthetic oil, and whenever I stop, I leave the engine running while I undo my seat belt, toss random electronic devices back into the glove box/center console, etc.
But I only make a concerted effort to idle for 30+ seconds if I was just running like a bat outta hades.