Taste is spot on; five star worthy. Follow measurements precisely, as one extra drop of pineapple would be too sweet. Slightly less might be ok, but don't push it or it will be too tart. It is also great with a splash of lemon-lime soda.
Deducted one star for instructions. The cream of coconut doesn't really mix well into the lemonade. I stirred and stirred until I ran out of time and still had small pieces of the cream floating in the punch. Second time I made it, I put the cream and half of the pineapple juice in a blender before adding it to the lemonade. Easier, faster, better.