How far away are you coming from? Why can't you drive day 1 AND do Dorney or Knoebels? Parks don't open till 11 I drove all the way across the state, was there before opening and did Knoebels till close with my 8 year old son. Maybe I am a homer but I wouldn't skip Kennywood personally. You could even slam Kennywood and be done by afternoon and drive home.
I have a road trip planned with my son tomorrow and the weather tomorrow in Erie looks less than ideal. We are not afraid of rain, but I was wondering how there rain policy usually gets handled. I know my local park Kennywood closes if it is rainy all day. Would love to sneak in all the rollercoasters if we can after we stop at Coneaut. Thank you!