“I wonder if in the home they were staying in, the females were dressed.”
From living in Miami i can honestly tell you all that it’s not like FL in the summer is buzzing. But i do agree with your premise. But the fact that schools in NY dont let girls come down, even with their families is not because it’s really the miami community. To be truthful problems begin when teenagers come from NY for winter vacation or peasach and they get into trouble with themselves. And for the 1/2 being dressed… us Miami frum people are just as tznius as everyone else.. we’re just out of town. Of course goyim here may cause the problem that you’re referring to. I just feel like in general, there is a stigma to where I live. Like because i’m from Miami i may not be as tznuus or as frum because “it’s hot”. So what? For us halacha is halacha and we strive to follow it just as much as everyone else.