Isabel tells her Mom what she and her friends did all day: Jugamos vóleibol y nadamos ... nos fuimos a la Isla de Picnic ... We played volleyball and swam ... we went to Picnic Island ... I'm puzzled by the underlined words. I thought 'irse' meant 'to go away' or 'to leave'. Why doesn't Isabel simply say 'fuimos a la Isla de Picnic'? Why does she say 'nos fuimos'? Thanks in advance for your help!