Do they have certain days or holidays where it’s half off? Or do special discounts?

I don't think so

Hi Kristan! Yes, During every Tuesday in August admission is $2 per person! Hope to see you then!

August they have $2 Tuesdays where every venue is $2, they often have $2 fudge then as well

Sometimes they have deals especially in the summer on discounts if you call them they will be able to let you know when their deals are

Suggestion: Ask them.

Some times summer vacation.....