According to the following link:
Kevin Costner & Modern West will be performing at The Lakeland Center, in Lakeland, Florida, for one show starting at 8 p.m. on March 28, 2012. Tickets will be going on sale January 20th and will cost $45, $47 and $125, which includes a meet and greet. Lakeland is located in Central Florida.
The Lakeland Center's KC & MW event page: