The wedding took place later that evening. Of course there were whispers about the fact that the Imperial Princess, the new Queen if Alderaan, was clearly heavily pregnant. And of course there were huge concerns over the fact that Vader and Palpatine's grandchildren were forming an alliance, when the grandparents together hadn't worked out well for the majority.
But Rey and Ben were married and before they retired to the king's chambers, Ben ordered that word be given that the Queen Mother was to be forgiven all crimes and be allowed to return to the palace, to spend time with her first born grandchild.
The consummation of the marriage was carried out very tentatively, with Ben curling himself around Rey. If any doubted their decisions, and they didn't, then that first push inside would have blown it away.
Ben swore that Rey was so beautiful pregnant and bragged about how many more he would give Rey.
As it was, their first born was a girl, Princess Trilla. Under Alderaanian law she couldn't ascend to the throne but was second in line to the throne of the Palpatine Empire. No doubt he rebelled in the future conflict between his own great grandchildren for years to come.
Her great grandfather took great interest in his new heir, insisting that she visit often.
Eventually, Sheev Palpatine could no longer cheat death and Rey became Empress, days after giving birth to her son, Prince Cal.
And there was peace for a while.