Activity for Mary Ann

Hi - We would LOVE to go to an island for our honeymoon, however it is hurricane season during August. (We're getting married mid- August). I heard that Bora Bora or Fiji is pretty amazing, however I think it is expensive to go there. Any suggestions...

Has anyone had or been to a wedding reception at Positano's in Bethesda? Also, any ideas what the average cost for open bar would be...with beer, wine, premium alcohol, for about a 4-5 hour reception?