Shake Shack first quarter 2018 earnings call — Shake Shack — “Some of the things we’ve clearly seen is that our guests do often want to pay with cash. In the first rollout at Astor Place, we did not accept cash at all. And there are people who have told us very clearly, ‘We want to pay with cash’. So in this next phase, we’re going to go ahead and have cashiers as well as kiosks.”