I've noticed in the recent livestream over at https://www.youtube.com/watch?v=JqZhaZtGbU4 that you have guests wearing glasses going on rides. While I would leave glasses on when going on a merry-go-round, I would store glasses in their case while riding a rollercoaster. Otherwise the G-forces involved would tear them off and send them sailing in an arc somewhere into the park. Fragile and heavier models (with higher correction, esp. for far-sighted induviduals) may shatter from the impact upon landing.
I would suggest evaluating ride G-forces and have a certain percentage of the people that are wearing glasses stop wearing them while on a ride depending on the intensity of the ride. E.g. (almost) all people would take them off on a 40m tall steel coaster with multiple inversions, nobody would take them off on a gentle railway ride, and some would take it off when on a junior coaster. Other options include straps designed to keep such objects from flying off.
Other objects where similar concerns are valid include some worn souvenirs like hats.
I would suggest evaluating ride G-forces and have a certain percentage of the people that are wearing glasses stop wearing them while on a ride depending on the intensity of the ride. E.g. (almost) all people would take them off on a 40m tall steel coaster with multiple inversions, nobody would take them off on a gentle railway ride, and some would take it off when on a junior coaster. Other options include straps designed to keep such objects from flying off.
Other objects where similar concerns are valid include some worn souvenirs like hats.