The Moroccan national currency is the dirham. It is not convertible outside the borders of the Kingdom, so think about exchange and other means of payment.
Exchange
The import and export of Moroccan currency are strictly forbidden. Foreign currencies imported in the form of banknotes are subject to declaration upon entry into the national territory with the customs services of the borders, when the amount imported is equal to or greater than the counter-value of 100,000 dirhams. Upon presentation of exchange vouchers, you will be able to exchange the international currency of your choice for dirhams.
Where to exchange?
There are exchange offices in airports, in certain hotels, and in most banks. Certain counters will require your passport for the transaction. Remember to exchange the dirhams that you have left before your departure. This operation cannot apply to more than 50% of the sums exchanged during your stay.
Credit card asset
Inform yourself with your bank to know the places where you will be able to withdraw cash with your credit card. Banking establishments in large Moroccan cities are most of the time equipped with automatic teller machines. Exchange as you go according to your needs. The immense majority of purchases or services are paid in cash, after the usual negotiation...

To remember
Check the exchange rate of your currency, and if your bank is in the Moroccan banking network.