Glad you had a nice time. I got several rides on Diamondback today. I for one was really shocked that the park wasn't alot more busier, since us season pass holders could bring a friend for 9.99. But non the less it was a great day.
I didn't even stay the whole day though, I left around 5, as I was starting to feel burnt out too. I however did ride what I wanted and had a great time.
My last day ride counts.
Diamondback 6
The Beast 1
Vortex 1
Flight of Fear 2
Firehawk 1
Racer 1
Adventure Express 1
Delirium 1
Drop Tower 1 (it was so nice that they reopened Drop Tower for the final weekend)
So 15 rides in 6 hours not bad at all.
Even though I'm burnt out now, I know come spring I will be excited as ever to get back into Kings Island. And hoping to bring my someone special to the park with me next year.