Do they offer free or discounted tickets for those who can't afford, like thru library or EBT card like other places?

I haven't seen a sign that they have an open door policy but it wouldn't hurt to call and ask

It also has an open door policy, i.e. economically disadvantaged families can basically enter for a reduce fee or for free.

I haven't heard of anything like that, would be nice.

The only discount i saw was for AAA