I am happy to offer my experience  to bless your commitment ceremony

Commitment ceremonies may mean different things to different people.

A commitment ceremony can look just like a wedding, complete with church, wedding gown, and hundreds of guests -- but no marriage license.

Or, a commitment ceremony can be an alternative event regarding:

a ritual to bless your relationship:

or  a  party to celebrate your love:

an intimate exchange between you and your partner:

or a family rite of passage to strengthen the bonds between parents and children in a new unmarried step-family.

You can call it a commitment ceremony,

a wedding,

a ceremony of union,

or your choice of words!