GRAND RAPIDS, Mich. (WOOD) A south-of-the-border party is planned in downtown Grand Rapids. The Grand Rapids Arena District is throwing its first ever Downtown Fiesta! It’s on Saturday, May 17. There will be family activities, live music, food vendors, and a cantina. Admission is free, but it’s $10 to get into the cantina. The party gets started at 3 p.m. at Rosa Parks Circle.