Childcare Needed - Full-time / Part-time

We are looking for a great sitter for 1 child in Siesta Key area. Very little direct care is needed other than safety, supervision and coordinating a fun activity to do in the area while we are at an event. Possibly an arcade or bowling and dinner (or something comparable). Older brother will be there too. He is a sweet, self-sufficient, easy going 23-year-old with different abilities, but not comfortable watching his brother alone somewhere other than home.