You'll Never Walk Alone by Rodgers & Hammerstein certainly is a song that fits to a wedding ceremony. It has been interpreted by thousands of artitsts, among them some pretty prominent ones. To get into the song and its feeling I recommend Satchmo's rendering of it:
Then we will go on with the sound of the song (that remains the same) accordimg to the aesthetic rules and regulations of the Gospel genre. As such it has been recorded by the Queen of Soul herself, the wonderful Aretha Franklin, with a Baptist Choir in a Baptist Church (she is the daughter of a Baptist minister) on the album Amazing Grace - a rather lengthy version, indeed (as one would expect of a combined soul and gospel undertaking).
My favourite version is done on the piano without any singing by Nina Simone:
Whatever I might think about Elvis, his version is one of the very fine renderings that involve singing:
I do not include the Johnny Cash version here, but that does not mean that I would not appreciate it. But I cannot leave out the recording of the song by Gerry and the Pacemakers, as this is the version that has inspired the use of the song as a football anthem, first and foremost among the supporters of Liverpool FC:
And here they are, the supporters of Liverpool FC: