​I care very deeply about giving beginners a positive experience, but this seems over-the-top (I was going to say "silly" but that sounds too judgemental.) 

Have there been complaints?  

Are experienced dancers unwilling to approach a beginner and say "Would you like me to teach you to waltz?  It's easy."   This happens all the time at our dances.

Maybe you could have a 5 minute "Your First Waltz" workshop before the half time waltz.  (Really five minutes should get them walking around the room in 3/4 time and having fun doing it.)

Dale​