I suppose it’s really up to anyone’s interpretation to hypothesize on what may happen but I tend to think of it as a ‘Splitting Prism’ where those who are ready to ascend will do so collectively and those who are not ready will ‘phase-out’ into their own collectively-chosen reality.
And yes, I believe it will be a grand opportunity for anyone and everyone to discover more of who they really are and to express ourselves in all manner of ways that we had only dreamt about previously.
Personally, I believe that the December 21st date will only be the ‘Tipping Point’ or the ‘Threshold Crossing’ into our new world. It seems plausible to me that at that point in time, for the first time in a long time, there will finally be slightly more Positive Momentum on the planet than Negative. But I think we will be able to quickly snowball that momentum into the creation of whatever future(s) we prefer based upon our personal vibration(s).
I hope that helps! Namaste.