SDCL § 35-4-102: Minibars--Beverage sizes--Age limit--Access.

Any hotel or motel may sell alcoholic beverages, except malt beverages and wine, in sizes not to exceed one hundred milliliters and malt beverages and wine in sizes not to exceed three hundred fifty-five milliliters to its registered guests twenty-one years of age or older, by means of a minibar. Access to the minibar in a particular guestroom shall be made available only by a key, magnetic card, or similar device. The licensee shall verify that each registered guest who is provided a key, magnetic card, or similar device to access a minibar is twenty-one years of age or older.