Earlier quoted context omitted.
If you're using roaming on your cellular plan, all your traffic is routed over VPN to your home country, so local blocks don't work. (That's one of the reasons why it's trivially easy for foreign visitors to China to bypass the Great Firewall.) If you were on wifi, that's notably interesting.
I was on the resort’s WiFi, no vpn. What is strange maybe is that if I search my outgoing ip address, the resort is listed as the ISP
If you have DoH configured at either OS or browser level then you will not see a message: the site will either work, or it will error out if the IP is blocked.
If you are using an alternative DNS provider over unencrypted DNS then either outcome is possible.