>>2058755Non issue. Places everywhere waive it within certain grounds for festivals and events. In Philadelphia for example the ability to consume alcohol on a public street is granted along with block party permits.
>>2058415I would start by identifying the levers of power in your municipality. Most often stuff like this is done through a streets department since at its heart its about closing a street to traffic. However it could also include a planning department if this is to be a regular thing. You also likely have some kind of representative already, such as a councilman or ward commissioner that you can approach to talk through ideas like this and who can help shepherd the process.
Is there a community org that organizes the craft fair and the music? Are there businesses involved or who could be involved? Figure out who the stakeholders are who are going to own this process and this event. If the street does get closed, who's organizing the vendors, laying out the street, putting up signage and social media? Those are the folks who are going to be the big points of contact to get something like this done.
Then honestly start with a simple petition. You really just want to track people, where they are from, and their interest in this project. When you go to your orgs or municipal folks you need a way to show that it has backing. Post it up on a flyer, have the interested businesses and orgs share it around. Have those orgs and businesses write letters of support if they can. Build documentation about how many people want it to happen.