Its been a while for us too but as noted you can hike/ walk, or bike ride the paved trail in the park, take the walk to the beach and explore for something (animals for example) between the walk and the exploring they will tire
there is a playground. there is a fishing pier, beach but might be chilly depends on weather. Just have fun teach them to light a fire and cook over it (looking for small sticks to start your firewood helps)
Tell stories by the fire lots on the internet