Can I get a car seat in Miami Beach?

Yes. Ask when you book and say the age, because an infant carrier, a toddler seat and a booster are three different things and the wrong one is the same as none.

It is fitted before the car leaves for you, not handed over at the kerb for a parent to install on a live traffic lane at Miami International Airport while holding a child. That is the part that actually matters, and it is the part an app cannot promise.

Travelling with a nanny, a grandparent or a second family car following, mention that too. It changes which vehicle is sent more than the number of passengers does.