That said, there are some weddings that are a little more sensitive in terms of what happens when, and then it’s prudent to pay the leader to come to the rehearsal, and even play the music along with the proceedings to be sure it’s correct. Or, just for your own peace of mind, you may want to commit to this.
I do encourage couples to have direct contact with the leader in any event; some musicians “contract out” the job to a group that receives all the information, but never speaks directly to anyone in the wedding party. This, in my opinion, is a big mistake. Here is a story about one wedding one of my colleagues played.
A groom was truly excited about choosing a meaningful love song as a surprise for his bride’s entrance. He had arranged different music for the wedding party’s march down the aisle, then the musicians were to change to his special song for the bridal entrance. The musicians had been hired by another musician who couldn’t be at the wedding themselves (probably because they had another engagement that day and time). The message about the special song was lost in translation, and it was never played! You can imagine how upset that groom was; he was standing up front in the church, waiting for it, and it never came.
Long story short, weddings are all about details. So, do whatever you think (and your musician leader thinks) to get it right.