I hate to bring this up again and again but I just want to make sure I understand it all and end up with no surprises.
I have Verizon. If I enable WiFi Calling and put my iPhone in AirPlane Mode I will be able to make and receive calls from or to anyone in the US and not be charged. I should also turn off Cellular Data so that the phone does not try to connect to the Internet but will still be able to access the internet through WiFi. All of this is contingent on actually being connected to WiFi
If I contact Verizon and set up the International Calling Feature they provide, I will be charged $10.00 per 24 hr period only if or when I make or receive a call while not connected to WiFi.

If I have all of that correct, my next questions are how is the WiFi at Beachside Villas and do many restaurants or other establishments offer free WiFi?

Thank in advance for any answers provided.