You are correct. I checked and Greg has it listed for both States.
However there has to be a error in one of the listings.
The two casino are operated in two differant states, at two locations, by two different Native American tribes.
I am currently in Door County Wisconsin but will return to SD by Thursday and will attempt to confirm which is correct.
I will check personally with the management of the Dakota Sioux in Watertown.

Thanks for bringing up the subject.
R. Todd