Add the grenadine, simple syrup, rum, allspice dram (if using), guava nectar, pineapple juice, orange juice, lime juice and bitters.
Stir to combine and garnish as you like.
MAKE A PITCHER:
Combine the grenadine, simple syrup, rum, allspice dram (if using) guava nectar, pineapple juice, orange juice, lime juice and bitters in a large pitcher. Chill several hours or overnight.
To serve, fill individual glasses with ice, pour the Planter's Punch into the glasses and garnish as desired.