No. easy peasy. There is a waiting lot there with probably more than 100 Uber/Lyft vehicles waiting. There are also hundreds of cabs waiting in several lots.
It's also an easy ride. It takes longer to get OUT of PortMiami than it does to drive to the airport! The route out of the port is super-twisted, but don't worry -- the driver is not lost! A madman or serious drunk designed the road out! But once you hit the tunnel, only a 15-20 minute ride, all expressway.
The problem you may have, however, is luggage. With the Covid restrictions in place, 4 people will require an XL and nobody is supposed to sit in the front passenger seat. So two people in the second row, two in the third. Depending on the vehicle you get, that may or may not work.
There are lots of options. There are numerous shuttle services, and many of them drive full-sized vans towing a trailer for the luggage. There are also bus shuttles with plenty of room for luggage.
Just Google PortMiami-MIA shuttles and you'll get plenty of options.