I was going to look into when we were originally planning. However, with my Jan 2009 date my travel agent (and some people here) advised me against it as it would be too close to opening. The risk of it not being done in time or still having parts under construction was too great. Not to mention, the wedding coordinator would have less experience and things may not go as smoothly.
So I guess it would depend on when you are thinking. If its later in 2009 I would say defintely consider it! The Rius are nice and it would be awesome to be in Montego Bay and avoid the commute to either Ocho Rios or Negril. Plus if its just the 2 of you, I think there would be less stress in the wedding planning portion as you can do what you want and wont have the added stress of guests. Just my two cents though. If you are really considering it I would maybe contact a TA and see if they can get more details for you. (Mine said she could probably get more info back when I was looking... but since we decided not to, I never got it)