Ok now i see where your confusion come from and i am sorry i added more to it.
The wedding in Morocco is the big celebration the big day is you want to call it that way but it's not he same as the Conclusion of Marriage Certificate , the later is more of small affaire but its the legal part of the union. The couple can live together o wait their wedding it's their choice.
If they go separate way they need to get a divorce before the wedding
I know it may look confusing as Morocco have his unic traditions but you can look it that way: the wedding is just a celebration of Conclusion of Marriage Certificate,to be married in Morooc ppl can have the Conclusion of Marriage Certificate without a weeding but they can't have wedding without Conclusion of Marriage Certificate
I hope that help