Gregg's Substation and Casino isn't trying to be two things at once — it just is. Sandwiches and slots under one roof in Sioux Falls, which sounds like a fever dream until you're actually there eating a sub while someone nearby hits a machine.
Gregg's builds sandwiches the way a sandwich shop should: stacked, substantial, and assembled to order. They serve the lunch crowd, the after-work crowd, and the crowd that just wants something real to eat without a lot of ceremony. The casino side adds a layer of low-key entertainment that keeps people planted longer than a typical counter spot would.
What locals have figured out is that the combination works because neither half feels like an afterthought. You're not eating a sad sandwich propped against a slot machine — the food holds its own. Gregg's earns repeat visits by delivering exactly what it promises: a solid sub and a reason to stick around.