How about doing The Joy to the World series on Sunday. I don't think there is enough time on Saturday after the event. Being it's a 40 mile drive to the island. Of course this would only work for those staying in the area I guess. Just a thought.

The caches are: Joy to the World (GC1WRWB) by Three Dog Night (3/5)
Joy to the Fishes (GC1WRX9) by Three Dog Night (2.5/5)
Deep Blue Sea (GC1WRXE) by Three Dog Night (2.5/5)
Mighty Fine Wine (GC1WRXA) by Three Dog Night (2/5)