^ Scripting fail? Or did you have to mash the reply button three times?
If you have to go on a weekend for whatever reason, take Sunday. Fewer groups go to amusement parks that day I think because of church. I'm not completely sure on this though but one thing I know for sure is that you definitely don't want to go on a Saturday.
Thursday has worked for me but you may get better results on Tue/Wed. And never go if the weather forecasts a high of 89 or more a day before the trip. Maybe King's Island has better distributed water rides than Cedar Point because CP is awful on a warm day.