And it's clear that fans were only there to see the World Cup winner as soon as he was substituted an exodus began.
Having just returned from his summer break, it was unsurprising to see Messi not play the full 90 minutes in the Sunshine State.
He was substituted in the 78th minute for Robbie Robinson as Miami cruised to victory.
A video shared on Twitter shows just how many fans came out to see the seven-time Ballon d'Or and their reaction when he went off.
Swathes of people can been seen heading for the exits, even though there were more than ten minutes left to play.
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Despite Christopher McVey's late red card, Miami won 4-0 to keep them top of their Leagues Cup South 3 Group.
Messi was the star of the show once again and even debuted a new 'hold my beer' celebration after his first of the night.
It's clear the Argentine superstar is already beginning to settle in his new surroundings, although he is yet to make his first MLS outing.
Fans don't have long to wait to get another glimpse of some Messi magic in a Miami shirt.
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Having finished top of their Leagues Cup Group, they have advanced to the Round of 32.
The winner of South 2 group, which consists of fellow MLS sides Houston Dynamo and Orlando City as well as Mexican outfit Santos Laguna, will host Messi and co. from August 2.