dane said:
You can also have a nice lunch at Quai Ouest if you don't want to worry about crossing Oyster Pond and getting back over.
If they go to Mr. Busby's first then they only have to take a taxi over to Captain Olivers, one way. I suggested Mr. Busby's because they have children and they expressed an interest in taking a dip, you can't get much closer to the beach than Mr. Busby's...Once you get to the marina there is no place other than the pool at Captain Oivers to swim and I doubt that is open to the public.