Quiet sessions are being introduced as part of the Aqua Park pilot at Cosmeston Lakes.
Weekly sessions will be held every Saturday morning for seven weeks designed for people with neurodivergent conditions such as autism, ADHD and dyslexia.
The Aqua Park Group says the initiative is designed to offer a more relaxed and supportive experience, as part of its commitment to inclusivity and community accessibility.
The sessions will be supervised by the park's dedicated team of lifeguards - with fewer participants, smaller briefing groups, and a calmer environment.
Connor James, director of Cosmeston Lakes Aqua Park, said: "We know that adventure should be for everyone, and Quiet Sessions are just one way we're working to make the Aqua Park experience more accessible."
"We've taken steps to make these sessions calmer, more structured, and supportive for those who need it - while still delivering all the fun we're known for. Carers also go free, for those who need a little extra support as they take to the inflatables."
The inflatable water park attraction, which opened earlier this month, is being run as a two-month pilot scheme until mid-September.
Vale of Glamorgan Council says it will carry out a review before deciding whether to put a similar attraction out to tender next year.
A series of protests was held in the run up to the park's opening on 5th July over environmental concerns with a petition against the development attracting more than 7,400 signatures.
Last week, the Vale Action Group acknowledged that the attraction was operating "more quietly than expected" with extra precautions put in place for those using it - but they added there were still "grave concerns over the water quality."
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