I can tell you from misguided experience it is not worth eating at Shake Shack anyway. If you want a good hamburger find any hamburger alternative you can, any one at all.
Ate there one time on a visit to Indy for the 500 Time Trials. My buddy whom had transferred to TN from CA was with me. He said SS was trying to be the Mid West / East Coast version of In and Out. We both agreed they were failing at it miserably.
Shake Shack is Steak N Shake with another zero added to the bill.