no, you can change to dirham the sum you want..the restrinctions is if you are moroccan and you want change money into other currency ..there is a limit 1500 dollars maximum ..for you there is no problem and no worries ..even if you will chnage all your money to dirhams ..when you wxant to go back and you still have dirhams money you can chnage it back to dollars ..euro whatever you like ..