The Polka, is one my favourite types of dance. Not that I dance it, but because it fits in so well with the organ. The organ is always at its best with fast moving tunes. A Polka always fits the bill.
I have arranged dozens so far and they always play well. Slow waltzes and Old Fashioned waltzes on the other hand, although nice in themselves, can seem to 'drag' a bit on long sustained notes.
After Polkas, I would go for a good rousing march any day.
.