Alison, I went on the Marrakech trip in April. It is very easy to get local currency once you are there. I changed some GBP at the airport while waiting for the bags to come out as there was nobody waiting, leave it too long and there will be a queue . Otherwise, when you get to the hotel there is a cash point in the street at the side to the right of the hotel or cross the road, it is a busy intersection, to the train station and there are two cash points there at the front outside. Carry on a bit further to the crossing, cross the road, go past a cafe and there is a Bureau de Change on the right. Next to that is a small shop for water, juice, biscuits and local ciggies. It is difficult to visualize from looking at the map, but once you are there and have explored a bit, all will become clear. You will have a great time, its a lovely city and a good trip.