From the Pérez Art Museum Miami (PAMM) website:

Visitors who arrive to PAMM by Metromover on September 1 will receive FREE museum admission. A PAMM visitors services staff member will be at Museum Park Station with museum passes, good for Monday, September 1, 2014, only.

In observance of Labor Day, Pérez Art Museum Miami (PAMM) will offer free exhibition tours at 11:30am and 2:30pm. The tours are led by trained museum guides and last 45 minutes.