It wasn't that crowded last year on Opening Day, (It was a little below average), but this year I'm guessing it will be a little bit more crowded because of Millenium Force. You have to take into consideration that only so many people can come. How many people are going to pay full price ($10 off with a special Pepsi Can) to come to Cedar Point on a usually chilly day? It's on a Sunday, and kids have to go to school the next day. Remember: There are only so many people in Sandusky, OH. Around 30,000- Let's put it this way: You'll wait in line a long time for MF, but beyond that, it will be a regular day.