Chill pineapple juice and soda. Blend first four ingredients in a blender until creamy. (I've found a hand blender works very well since my blender won't hold all of this liquid or you could split it into two batches.) This can be done ahead of time and put back into the fridge until serving time. When your ready to serve, place coconut mixture in punch bowl, add ice cream and allow it to dissolve somewhat. When ice cream has dissolved almost completely, add pineapple soda. Add ice ring and decorate the frothy top of the punch with thin orange slices. If you wanted to make this alcoholic, cut back a little on the amount of soda and add a bit of rum - I like it with Captain Morgan Spiced Rum.
