These will be fine for a few days at room temperature, though I doubt they'll last that long.
mentioned that they might be even better after a few days - once they got a little stale and firmer. I have one sitting on my desk in foil as an experiment, and I'll report back. :)
Super special report back: After three days, the creme and cookies have firmed up slightly, but they're still not crispy by any means. And they taste just as delicious. So mostly this just proves they're still amazing after a few days. HOORAY