From Darden's wbsite: "Darden is a restaurant company featuring a portfolio of differentiated brands that include Olive Garden, LongHorn Steakhouse, Cheddar's Scratch Kitchen, Yard House, The Capital Grille, Seasons 52, Bahama Breeze and Eddie V’s." So, it looks like the answer is no.
What John Torre said, you can't use your Darden gift card there
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