I've been too busy to double check my November and December flights for at least a couple of weeks. I just went today to see if fares had moved and half of the BWI-MCO direct on my November date are sold out of WGA/WGA+. The ones left are a few thousand more points than when I booked opening day.
I know people hold off on adding companions so that they can possibly rebook at lower points, but I'm pretty sure, for November at least, that's a lost cause. I went ahead and added my companions before any flights sell out entirely. December rates are much closer to opening day, and nothing is sold out of WGA, so I'll give those a little more time.
If, by some miracle, flights do go down for November, do I have to cancel companion/rebook/add companion or can I call SW to make the changes? I know when I wanted to change my August flights when we got the red banner, fee free change option, I was able to do it over the phone despite having companions on the reservation.