What is the ruling on being present in public places where alcohol is served, such as hotels and restaurants, in various situations like international delegations, scientific conferences, training courses, or recreational trips? Does the ruling change if one avoids restaurants that serve alcohol? Why is the discussion focused on alcohol rather than other sins?

The judgment on sitting in places where alcohol is served: It is not permissible to sit at a table where alcohol is being consumed. As for hotels and restaurants that serve alcohol, it is not permissible to stay or eat there except in cases of necessity and when there is no alternative, such as attending a conference or training course, while requesting that alcohol be removed. However, if an alternative is available, these places should be avoided, because abandoning reprehensible acts is obligatory unless there is a need or to denounce them.