you should check times of parades in brochure of that week. All the schedules can be found there. I guess it depends when you're going. There are morning parades and Once upon a dream parade later in day. Last year in March morning parades were three times a day 10, 11 an 12 am. And Once upon a dream parade was 17.00. For this would find ourselves a nice spot 30min before the parade, but you come later.