My understanding is the pay adjustment is based on local market rate, so in your case, whatever is market rate for your role in Miami.
What you probably need to be aware of is of potential bimodal/trimodal salary distributions. There's a ex-uber guy on youtube[0] that talks about such things existing in Netherlands. Assuming you're in a similar class of companies, that might be something you might want to watch out for, and potentially bring up in salary negotiations.