Here’s a demo of Mendelssohn’s Wedding March on solo pedal steel.  These living room recordings were made at low volume, so there is some mechanical pedal noise that you wouldn’t hear in concert.  The amp is a Webb 6-14E.

The second recording uses the Electro-Harmonix POG2 for a mild organ effect:

The third recording uses a full-tilt church organ effect, again from the POG2:

Update: the bride chose the first version, without the organ effect.