Hello. We are planning a trip to Universal Studios for 8/20 -8/24, and staying on-site. According to crowd calendar, that week is significantly less crowd. But, there is no early park admission for those days. Is this because the crowd is so low that they don't need to have early park admission? For Harry Potter attractions, would it be better to visit the parks previous week, 8/13-8/17, with early admission(more crowd) or 8/20 -8/24 without early admission(less crowd)? Thank you for your help.