Gervay is head of the Society of Children's Book Writers and Illustrators (SCBWI) Australia East and New Zealand, former chair of the board of the New South Wales Writers' Centre, writer and ambassador of Room to Read, role model for Books in Homes, and patron of MonkeyBaa Theatre. She has been a speaker in many festivals and conferences including the SCBWI International Conference at the Bologna Book Fair, Byron Bay Writers Festival, Beijing Literature Festival, Somerset celebration of Literature Festival and festivals and conferences from Delhi to New York.