There currently isn't any easy way to get to the lighthouse by land. What you CAN do is drive down past the maritime museum along a long road with a one lane wooden bridge past a bar and a boat launch to a burned down skeleton of some old bait shop or restaurant. You can see the lighthouse to the west across the little cove. Parked next to the ruins of the bait shop is a ghostly looking derelict tugboat that my wife tells me she used to play in as a child. Someone in the museum may know how long it's been there, but I have never stopped to ask. This is a unique spot, but probably not a great place for a picnic. Try Sunset Pier in Mandeville.