I learned the hard way that while I was upstairs for a few minutes getting ready to leave the house, my kids chugged down the entire contents of their 750 mL water bottles.
In the seventy-five minutes that we were in Costco, I had to make five (yes five!!) emergency trips to the bathroom with the kids. Between walking to the bathroom (always, seemingly, from the farthest corner of the store), the kids doing their business, going through the hand washing process, and then laughing (again and again, and always with a sense of wonder) over those super-fast, skin-wrinkling, hand air-dryers, each trip consumed ten minutes of time. On our last trip, as we passed by the customer service counter, the clerk standing there recognized us (how could she not), and smiled.
"Again??!" she said.
"Yup," was all I could bring myself to say at that point.
Seriously, we spent way more time in the bathrooms than we did shopping.