According to a bartender at Red Lobster, they use a mix called "mango passion" ( just a tropical blend of mango and berries) with a shot of Captain Morgan and blend with ice. A strawberry syrup or grenadine is plashed around the inside of the glass. Pour in ice mix then top with Myers Dark Rum. Garnish with an orange slice + cherry.
Texas Fever Water (Makes 5 gallons) (1 ¾ liter (big bottle) vodka 1 ¾ liter (big bottle) rum 1 gallon orange juice 4lb bag of sugar 1 small bottle grenadine sliced orange, lemon and lime rounds, apples, blueberries, strawberries (any fruits) large bottle maraschino cherries, juice and all).