If you are entitled to FREE SCHOOL MEALS, you and your family are also entitled to a Passport to Leisure (PTL) card which oers a discount of up to 60% at over fity attractions, including Active Swansea Leisure Centres, Plantasia, the Wales National Pool, Taliesin, the Grand Theatre and the LC.
http://www.swansea.gov.uk/article/2361/Are-you-eligible-for-Passport-to-Leisure