We are staying at a hotel about 10 miles north of Arrowhead by Worlds of Fun. We aren't interested in tailgating, but want to make sure we get into the parking lot before it gets full. I prepaid $50 for parking. What time should I plan on arriving at the stadium for the 8 PM kickoff? Will I-435 be badly clogged before the stadium? Is the parking lot one of those where people arrive 5 hours early and take 5 parking spaces to set up their tailgate, or does the Arrowhead staff keep a lid on that.