"All Kinds of Everything" -- Sinead O'Conner (a little fast, but has a light folk-like quality)
"Irlandaise" -- David Lamont (flute & jazz piano; a jazzy folk sound)
"Jean" -- The Andy Ross Orch. (a light, upbeat mood)
"Carolina Sunrise" -- [don't have an artist on this one, but lyrics might be good for a wedding dance; especially if you hale from the South]
"A Time for Us" -- various artists
None are Rock or Soul. Don't think they will find much of this in 3/4-time.
IMHO, the Waltz "The Twelfth of Never" (Dance Super Star Vol 7) tops all. There are also Rumba verdions (I like the one by Tammy Wynett and the one by Al Miller; these are availble at MP3 Download from Amazon at less than $1)