If I was able to I would go and try them- here in New Zealand we have very few retailers accepting although there is some uptake in Queenstown where there is a lot of international tourism coming in and a startup offering a payments platform via LN - they've got about 20 retailers so far accepting. I like to try any food outlet or bar that accepts LN/BTC as they tend to be better than average. But if Steak n Shake do not get enough customer uptake they may just become another failed adoption attempt that does not gain sufficient increased turnover to justify the effort required.