Just returned from Riu Vallarta (8th.stay),, this question was asked a month or more, and different answers..
I noticed the RED wrist bands this trip at the Vallarta.
Vallarta wear Silver,the Jalisco wear Red.
So I asked Management about it.
The answer is : Since the new$$$$ Renovations at the Jalisco the rateing went up..and Price is now very Close also..
Therefore people can now go to Either resort at any time OTHER than for dinner.
Hope this helps.