Hi everyone. I will be getting married soon and our first song is to Dean Martin's Sway. I'm wondering which dance style is good for this song. I had one friend tell me Rumba and another tell me Cha Cha. I'm so confused. Help please.

Either one would work quite well.

Cha Cha gives a more rhythmical faster hip and foot action.
Rumba will give a slower or more smoother controlled action.

Some faster cha cha that can be too frenetic can be dance as a slower rumba rhythm.

Rosemary Clooney
Pussycat Dolls
Michael Buble

Also do versions of the song.

Often I see people dancing either a Rumba or Cha Cha to Sway since it can be expressed individually by what beat and tempo moves you to express the music.

I hope this helps.