To add salt or sugar rim to the glasses, pour some salt (or sugar) onto a plate. Then rub the lime wedge around the rim of two (8oz) glasses. Dip the glass rims into the salt (or sugar) and twist. Remove and fill glasses with ice and set them aside.
Place the Tequila, Blackberry Liqueur, Pineapple Liqueur, Grand Marnier, Sweet and Sour Mix, and Blackberry Syrup into a large cocktail shaker with ice.
Shake well for 15-30 seconds to combine.
Pour into ice-filled glasses.
Garnish with blackberry, pineapple wedge, and lime wheel. Cheers!