AT&T is king in Miami. That’s exactly what I’ve been using for 7 years now. I also got an extra line (car SIM card) for my 21’ Volvo XC90 in car modem. Rather kids connect to that hot spot (8 devices limit) versus connecting to my phone. Yeah I have unlimited but we know phones get hot when other devices connected via hot spot. Also battery drainer. For road trips it’s a plus. I’ve never had issues with AT&T service.