We visited the RH construction site last August, so I can probably answer your questions.
There are no 3 bedrooms, just 2 bedroom, 2 bath units that have lockoff capability. You saw different bedrooms (and living rooms too) because they are building normal units, and deluxe units. The deluxe units have slightly larger master bedrooms, the master bath is slightly different, and they have different furniture in the living room and master bedroom. Besides that, there was really no difference between the deluxe and regular units.
They are still building the RH, first phase to open week of July 4, 2006. If the members who are buying into the new RH are similar to the other RR members, I would assume there will be all types of people, including small children, older couples, familes, etc. Many RR members travel every year to their unit, and bring their families. It is a very family oriented resort group.
When the new RH is completed (scheduled to be done some time in 2007 or 2008 I think) it will be a very large resort, from what I saw of the model. It looks like they will have snack bars scattered throughout the resort, as well as the restaurants, etc. If you want to gather more information, go to www.royalresorts.com
and click on the link for the new Royal Haciendas.
I hope this helps!