I look at it this way. There is nothing at all stopping anyone from choosing to continue to mask up for their entire day in the park. They were still requiring masks in any indoor location, including restaurants, shops and indoor rides. CDC guidelines state masks are not necessary outdoors. I have been fully vaccinated now since April 9, which means my 2 weeks were up on April 23.
Nobody is forcing anybody to go spend a day at Kings Island. If you aren't comfortable with it, it's not an essential service and you don't have to go. But things like sanitizing seats every 30 minutes and spacing out in every other row were nothing more than hygiene theater, and I'm glad Cedar Fair got rid of it. Had I not been vaccinated, it was admittedly quite crowded yesterday and the maskless crowds in lines would have had me masked up and/or not comfortable to be there. But I trust the science that states it's virtually impossible for me to catch or transmit COVID-19 at this stage of my vaccination. That's a risk I am willing to take. And damn did it feel good to feel the cold Ohio air on rides and congregate with a group of fully vaccinated friends and enjoy the day without worrying about masks or distancing. It took me all of one minute to have it feel normal again.