Mario Iaccarino to Open Casa Don Alfonso at the Ritz-Carlton, St. Louis March 21 ST. LOUIS, MO / ACCESSWIRE / March 11, 2021 / With great excitement, restaurateur Mario Iaccarino is pleased to announce the much-anticipated opening of Casa Don Alfonso at The Ritz-Carlton, St. Louis on Sunday, March 21. Located at 100 Carondelet Plaza in Clayton, Casa Don Alfonso will open with breakfast service seven days a week from 6:30 a.m. - 10:00 a.m. and lunch service will be held Monday - Saturday from 11:00 a.m. - 2:30 p.m. Dinner service will be available Tuesday - Thursday from 5:00 p.m. - 9:00 p.m.; and Friday - Saturday 5:00 p.m. - 10:00 p.m. Sunday brunch service will be available from 10:00 a.m. - 3:00 p.m.