The perfect  rum punch  depends a lot  on  your favorite  rum and your favorite  juices.    I despise  Grenadine, for instance.....  I  use  cranberry, orange, pineapple, papaya nectar ( in a pinch  apricot nectar is  not half shabby)   and  Cruzan  Amber.   Grated nutmeg on top  with   fresh lime cuts   to squeeze.  Plenty of  ice, shake  well. 
I know thats not a recipe,   just  seems to  work out whenever  I make it. 
Breeze