>>288760094
Pretty much what the other anon said. Wireless PCVR and standalone are the main selling points in my opinion, and if your IPD is fucked too. 
In terms of disadvantages, the main one is when running via link there will be compression, so the visuals may not look as good, and some people I've spoken to reported "off looking colors". General opinion is that if you're not going to run it wirelessly or use it standalone for a significant portion of the time, the Rift S is better.