Well, of course you need the cherry. Something's gotta cut through all that rum, and it sure ain't gonna be the pineapple juice.

As an alcohemical enthusiast and former amateur bartender, I encourage science. Just be careful. You think the ones you're drinking right now are strong ...

I'd offer to mix you one out of my liquor cabinet, but ... well, you know. Internet, two dimensional, etc.. But see if the bartender (this one or the next one) has any orgeat syrup. Do *not* let them try to sub in some crap almond liqueur or beverage flavoring. It's not even close and will ruin the flavor. (Trust me: science.)