To your blender, add limeade, ice, coconut cream, water, and coconut rum.
Blend until smooth.
Pour into your favorite cocktail glasses and garnish with fresh lime slices or wedges.
Notes
If you want to use fresh lime juice instead of the limeade, you'll want to add a bit more ice, and the amount you'll need will depend on the size of your limes. Start with the juice of two and add more if you think the drink needs it. Add a dash of simple syrup to add back in the sweetness you'll be losing subbing out the limeade.