It looks like they are recommending people park in lot D at LP field across the river. It is $10 for all day and there is a free shuttle back and forth from the LP lot to Music City Center that runs 6:30a-7p on Friday and Saturday and 7a-6p on Sunday. If it's nice, there's a pedestrian bridge across for a 3/4 mile walk. It's currently 90%, 0%, 40% chance of rain on fri/sat/sun.
Directions to LP Field:
From Interstate 24 (north and south), take exit 49 towards Shelby Avenue (stadium exit). Turn left on Shelby Avenue towards the stadium. Lot D will be on your right and can be accessed via Shelby Avenue, Interstate Drive, or South 2nd Street.
A free shuttle service will be available each day of the show and will pick up and drop off at lot D.
Also hotel shuttles
Friday, April 10, 2015 8:00am – 7:00pm
Saturday, April 11, 2015 8:00am – 7:00pm
Sunday, April 12, 2015 9:00am – 6:00pm
Green Route: Union Station Hotel (3 blocks away from MCC)
Holiday Inn Express Downtown (3 blocks away from MCC)
Homewood Suites Downtown (3 blocks away from MCC)
Sheraton Nashville Downtown (4 blocks away from MCC)
Capitol Hotel (used to be Best Western) (4 blocks away from MCC)
Music City Center
Blue Route: Hutton Hotel (1.2 m from MCC)
Loews Vanderbilt Hotel (1.6 m from MCC)
Homewood Suites Vanderbilt (2m from MCC)
Marriott Vanderbilt (2m from MCC)
Holiday Inn Vanderbilt (2m from MCC)
Music City Center
Red Route: Embassy Suites (1m from MCC)
Hilton Garden Inn Vanderbilt (1 m from MCC)
Home2Suites Vanderbilt (1.2 m from MCC)
Aloft Vanderbilt (1.3 m from MCC)
Hotel Indigo Downtown (5 blocks from MCC)
Doubletree Hotel Nashville (5 blocks from MCC)
Courtyard by Marriott Downtown (4 blocks from MCC)
Music City Center