Babysitter markree castle 19th nov

Hi we are attending a wedding in markree castle Sligo on the 19th November this year. I have two boys ages 8&5. Our main need is a minder for my oldest son as he is on the asd spectrum and sometimes becomes overwhelmed with crowds and music. He will more than likely prefer to have some quiet time in our hotel room throughout the evening. I am looking for someone based in Sligo area that is available to come to the venue. Experience with children with additional needs is essential.