Mrs Hazmike & I were in that property last fall, using points. Mrs Hazmike left Beijing before I did to do our recon. We had the hotel pick her up & when she got there a rep was waiting for her, schlepped her bags past the registration desk on the 38th floor & put her in a suite on the 50th floor.
The C Lounge is open weekends & is the bomb...great food & free adult beverages.
So, yes, we got the upgrade to a suite & were using points!! Unless something is crowding the hotel on the nights you're in town you may get the big room too.
PS Tiger Woods was staying at the JW that weekend for the HSBC Open. I know because I hung out with the NetJet pilots that flew him over there.
Sweet.