How do I go about getting a wheel chair for a guest in our party that will not be able to walk the park on her own

You can rent one from just inside the gate customer relations. You can take your own. They do the electric buggy/ scooters as well.

If you have a handicapped sticker for car parking , they have wheel chairs you can use till you get into the park area to rent one..or like what was said earlier u can bring your own..

Also, try to reserve the wheel chair in advance.

I belive its $15 for the day