They have a picknic area for rent. You could contact them about prices. My work rented it out for all of us workers.
For a fortune, you probably could rent the park. There is a large grassy area near the mud pond which may suitable. However, after your mention of your fiance's fear of coasters, I'd seek out a different venue. It may give you some commitment points. ;)
There are plenty of public or private areas in which a proposal could happen. As for a ceremony, you should contact the park directly.
I wouldn't. Unromantic with all the random people and kids there. I don't know you or your soon to be wife "congrats by the way" but if something different out of the norm is what you're looking for this wouldn't be the place.
It's not very pretty or scenic there at all
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