It may depend on the type of wi-fi network connection there is. I would ask the manager. However, you can look at this for help with wi-fi network connections, If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support
Or, if the network requires you to accept terms of service or other things via a browser, see this, Use captive Wi-Fi networks on your iPhone, iPad, or iPod touch - Apple Support
I have found with my devices if I have an issue similar to this and it requires a captive network connection, after opening Safari, i type the following into the address bar, 1.1.1.1 That seems to then force the browser to find the captive network page. Good luck.