I think you are kind of stuck since you decided to transfer the points to UA, as I don't think you can refund that. You haven't mentioned the honeymoon dates (unless I missed it), so let's focus on helping with that. I'm not sure how short you are in miles now that you transferred to UA?

Not to off rail things, but you are getting married, that is primary, the honeymoon is icing on the cake. Congrats in advance!