You can register for RR online. Follow the link on the left-hand side of the website to "Romance Rewards" and sign up.
As a first time visitor the only thing you can take advantage of is the Trading Places program, but you must have your RR number to do this.
After you have stayed at Couples, your nights are documented in this program and depending on the number of nights you have stayed you will get 'rewards'.
The Romance Rewards page will give you all the details, so check it out.
Juliann & Jeff
Jamaica Soon Come