Originally Posted by
onfo
Given the UA devaluation, I am thinking of switching to SAA for some earn as I will be visiting SA in late 2015. How available are domestic Y seats on SA? I can't seem to search on their website. Thanks!

You would be jumping out of the frying pan and into the fire for the reason
SAWorldVoyager gave.
Every seat is available using Voyager miles; the number of miles required just varies from massive to astronomical. As regards domestic award seats available to partners, of course you are able to see what is available on the UA or AV web sites and possibly others. There is usually a good supply provided you don't leave it to the last minute.
Where you should accumulate your miles I can't say - but SA Voyager is categorically not the place!