A Family Fun Day will be held at the Downs Leisure Centre in Sutton Road, Seaford, on Sunday July 20 from 10am-4pm.
There will be a funfair with sports and dance demonstrations, music, taster sessions and races.
The free event attracts about 4,000 visitors. It is being organised by Wave Leisure and Seaford Town Council.
There will be community and food stalls featuring jam and cake competitions.
Cafe Wave will be open offering a selection of hot food, drinks and snacks.
Community groups raise money for their activities.
At 3pm there will be a fancy dress parade for children.
Call 01323 490011 for further information or to book a stall call the town council on 01323 894870.