No. Mature applicants are not required to meet the normal minimum entry requirements. However, if you have completed your Leaving Certificate, you may be eligible for a course based on those results so you should also include them.
It is not a prerequisite but it would be an advantage to have work experience related to the particular field of study chosen. However, each mature application is dealt with on an individual basis and a lack of relevant work experience does not rule anybody out.
It is important to provide as much relevant information as possible in your application. This could include any state exam results, further education or third level qualifications, work experience or work experience in a non-formal setting (charities, clubs etc).
No, but to apply through the CAO, you must hold an EU birth certificate or passport and be resident in an EU member state for three of the five years prior to entry to an undergraduate course, or have official refugee status. Non-EU applicants are welcome, but will be subject to fees and must apply directly to the international office at WIT. In addition, if English is not your first language, you will be required to provide evidence of proficiency in the language. For more information WIT's International Office.