My little boy goes to nursery Tues, Wed and Thurs and I go to work. I've been invited to attend a work training event one Friday at the end of November. I would love to go as it would enhance my future prospects but we don't have anyone to ask to cover childcare and my husband has no annual leave left. Friday is a quiet day at the nursery. Would it be okay to ask nursery for my little boy to attend Friday instead of one of the other days as a one off? He only started in July so I'm new to this.