Sales of recreational marijuana kick off in Nevada on Saturday, July 1, and the state is expecting on onslaught of tourists coming to sample the local merchandise.

But visitors might have tough times finding the drug in stores.

Anyone who is 21 and over with a valid ID can buy up to an ounce of pot (or one-eighth of an ounce of edibles or concentrates) from one of several medical marijuana dispensaries that have been approved for recreational sales.

State regulators have issued the licenses necessary to 17 retail outlets in Las Vegas — as of June 27 — and may approve as many as 40 dispensaries by Saturday, the Associated Press reported.

In a legal snafu, those stores may sell the marijuana they have in stock for recreational use, but may not resupply their inventory and sell the new stuff to non-medical users. Their stock may run out as early as August, leaving recreational users without a place to buy their legal bud. [Read more at Business Insider]