Deckchairs and Decadence

Conversation from tonight:
a: Does Colombia have good beaches?
b: Ahh yes, lovely beaches,
c: Beg pardon?
b: They have nice beaches. I am hoping to go to the beach soon.
c: To Colombia?
b: No to the beaches here.
c: Oh.
b: Do you know any nice beaches?
c: The cumbersands are popular. But I don't recommend beaches. 
    (pause)
c: They're much too decadent.
a: Decadent?
c: People just lazing around in the sun. And the clothes of course. I don't approve of them. 
    (longer pause)
c: I prefer fresh water. Lakes, rivers that sort of thing... Small rivers preferably.