My son is getting married in two weeks. We have chosen "Ain't no mountain high enough" - motown song by Marvin Gaye for our song. What dance step (easiest) would you recommend for this song?
I have a short time to practice with him! Help please!!

First, you can't learn to dance in two weeks. Second, you have chosen a song that you can't dance to. I'd pass on the mother/son dance and just enjoy the wedding.

You can learn to dance in two weeks--if you do what the celebrities on "Dancing With the Stars" do. Are you willing to work with a pro for a minimum of six hours a day, seven days a week? And can your budget for the wedding handle that?

You do indeed have a very short time to practice, but it is too late now to tell you that you should have started planning the dance when they started planning the wedding.

I suggest looking at some basic salsa/mambo steps, danced slowly.
Basics kept small and on the spot during the quiet periods of the song, then burst into breaks, turns, spins, whatever you fancy during the chorus.

Just try to relax, ignore everyone else, and go with the music. Remember to smile!

Good luck!