how do we get rain check tickets

I'm not sure I would call them tho

Call them

I'm not sure cause I need to find out for myself I going to call the ticket office and see what they tell me you might need to do the same

I agree with the others call the office.

Rain check tickets for which event? The park is open year round with a standard entrance fee. Special events tickets are separate from park entrance and can be ordered ahead of schedule but you need to know which you event. It can be difficult to swap days if demand is high. I would suggest you call first to get the best information.

Call the office during business hours.

I would assume you would talk to the people that sold you the tickets