I already had loads of respect for Lisa and Brian for the amount of work it takes to make this cart run. I'm adding to that respect, now that I have a little experience (three mere days' worth so far) of how much energy each shift takes. And I was just there for a little over four hours; this doesn't match how much they must think about the place, about stocking it, about solving the problems that come up during the day, about coordinating shifts. I'm now pretty sure I'm not going to run any businesses; I like supporting them.
And it is damn satisfying seeing how much people love these sandwiches.