My husband and I will arrive in St. Martin on April 24, 2010 for 7 nights. It has been severalmyears since we have been there and our memories have faded on exact locations of things. We are staying at Saphire Beach. I have read that the Atlantis Casino is within walking distance but- walking distance for a 21 year old is different for middle age people. How far is it? We don't scuba dive. Help me refresh my memory of things that an older (not ancient) couple can do Thanks for the information and advice.