The thing about Orcadian StW is that there is essentially only one move repeated for as long as the line. In terms of assimilating information and sequence you can't get simpler. And it comes in handy for future dances with StW in them.

And inevitably some beginners get out of phase with their partner and the sequence goes one to couple 3 and the other goes to couple 4 etc all down the line. That just adds to the humour. And there are variations more bizarre to be seen.

Telling them to move "up" is necessary because they are concentrating on the StW not the set (per se).