TAMPA, Fla. – The Tampa Downtown Partnership is ready to shamrock and roll with its largest River O’ Green event yet! Presented by Grow Financial, this year’s Irish-themed celebration will transform Curtis Hixon Waterfront Park on Saturday, March 16, turning the Hillsborough River green and Downtown Tampa into St. Paddy’s Day party central. The free, family-friendly festival also includes food vendors, a wide variety of beers, a pet costume contest, and plenty of fun activities. River O’ Green runs from 11:00 a.m. to 6:00 p.m., with the Rough Riders’ St. Patrick’s Parade kicking off at 5:00 p….