So this is something I've been thinking about for a while and don't exactly have my head around yet. I definitely don't have an answer, but it's still something to think about.
Is there free will in the afterlife?
In order for love to exist there must be the opportunity to not love. This is the basis of the Christian idea of free will. God gave us free will so that when we chose to love Him it would mean something, because if we were simply programmed to love God it wouldn't be real love. God wanted us to choose Him, and the reason there is evil in the world is because we and other free agents decided not to choose Him.
Okay, so if you accept that free will is a necessary precondition to love, then what happens in the afterlife? In the New Creation, do we maintain our free will? Is there a possibility of not choosing God in the afterlife? We believe that Christ defeated sin and evil and the New Creation will be a place without death and decay, but there must still be some meaning to the decisions we make in the afterlife.
I think that in the New Creation we will be so exposed to the love and truth of God that it will become almost impossible to choose anything else. He will reveal Himself in full and every part of us that isn't love and goodness will be burnt off of us, so that we enter only with that which can be in God's presence. Therefore in the New Creation we will still be making decisions, but the decisions will be ones of love of peace.
It's still not cut and dry for me. I think there must be some eternal value to free will, and in the New Creation decisions must surely still be made. My two cents.