it does make a difference. Totally. Why tell people completely wrong information? It's quite ridiculous to argue that a VISA on arrival is same as entering with NO visa on an exemption.
strange how explaining they are 2 completely different things upsets some people. One is a visa certain passport holders buy on entry, the other a 60 day stay with NO visa at all. 🙄
Or use Skype and pay a few $$ for cheap calls to USA. I never buy a SIM and use for calls, I use the available free WiFi that's most places and call using Skype for landlines, and WhatsApp or messenger for everything else.