Dublin Zoo
Dublin Zoo have a very detailed accessibility page on their website. It includes the following:
The page gives information on how to get to the zoo, and what facilities are on site to support your visit (accessible toilets; changing facilities; communication board locations).
The page details ticket prices for people with additional needs. One carer can enter for free with each of these tickets (you must have your Carer ID or relevant documentation with you).
Their accessibility page is also good to check for any planned closures to parts of the zoo or changes to layout.