I have attended conferences that can be described as "scrappy": flakey oversubscribed wifi, lots of interesting talks and multiple "streams" in different rooms

I have attended conferences that can be described as "scrappy": flakey oversubscribed wifi, lots of interesting talks and multiple "streams" in different rooms over 2-3 days in a foreign country where my visit was too short to bother to buy a SIM card. Being apple to see the schedule offline would have been a boon, a problem that can be effectively solved by PWAs. Any app that's geared towards visitors or tourists is better served as a PWA - think of the apps used to pay for transit, or parking in a city you're visiting. A website is Ok, but offline access and a shortcut on the homescreen would be better.