On Harmony this December, it was either 4,000or 4,500 points to earn a free balcony room. They're on select cruises or you can simply use the certificate as a $1,000 credit for the cruise of your choice. If my memory serves (which it often doesn't) we only had to earn 1,000 points to become Club Royale, but again, I'm not confident of that amount. I'm sure once they have any of your information they will fill up your inbox with messages of their promotions etc., especially if they are changing the program.