I was unable to get married in the Church because me and my wife’s marriage date was set while I was still in RCIA. We did get married to a protestant minister in the trinitarian formula. It was nearly impossible to move foward cause everything was already set in stone at that date(the rentals, food, cake, music, groomsmen, etc). It was a wonderful wedding though and I don’t regret it.
When I finished RCIA my director said we can convalidate our marriage.