Walk Ins Welcomed

Thanks to our home equity loan, I was able to top off my Nissan's gas tank at the local On the Run convenience store/Mobil depot. Nearby was a Salon Boutique with a sign "Walk ins Welcomed". The proprietors were clearly trying to attract customers who didn't want to make reservations. But it still seemed to be a quirky sign, suggesting that crawl ins or run ins or limp ins or cartwheeling ins were emphatically prohibited.