Do they offer discounts for first responders?

I don't think they have a discount for first responders.

They usually do and for military

I don't think they do.

Per their website it doesn't appear they do. Only looks like it's on special occasions. https://www.texasstateaquarium.org/visit/discounts-deals/

I am not sure. We got senior citizen discount but was still expensive. $63 for the 2 of us.