Phones are the new cigarettes: why restaurants are discouraging and even banning them
(www.theguardian.com)
On iOS I use Focus a lot, but for things like theaters, restaurants, etc. the standard Do Not Disturb is enough, and if you use your calendar a lot (like I do so I can tap events on CarPlay to navigate) it’ll give you the option to deactivate the Focus after the event ends, when leaving, etc.