tracig

Hi My friend and I are flying to marrakesh tomorrow at 4pm for 5 days, we are staying at an all inclusive hotel and have our transfers organised, can anyone tell me where i should change money, should we do it at the airport (gatwick) or wait until we land and change it at the airport in Morocco? Also is the weather nice/ will we be able ro sunbathe/swim or is it too cold still, are there any nightclubs or bars we should know about, its a last minute shoet break just to get away but we want to have a bit of fun also...anyone able to recommend anything to help our break be as enjoyable as possible....also how much should we expect to pay if we eat out in a restaurant?? Thanks