in this speaking task, the student is usually expected to talk for about 5 minutes in a coversation with the teacher. it is important to use some key words and speech acts for the task. you have some time to write a plan, write the key words there. so if you think about holiday common words in italian would be: mare, montagna, vacanza, famiglia, costo, dove, come, quando, et al. those words will help you drawing a picture of the conversation. accuracy is important but fluency plays a vital role as well, so don't think too much about your grammar but speak about your favourite holiday.