>Also know that the public MUST be able to speak at Town Meeting, but not every municipality has Town Meeting.

Sorry to be pedantic, but this is not exactly right. Every registered voter has the right to speak at a Town Meeting. A Town Meeting is a legislative body, and only "legislators" (voters) have an unconditional right to address it (much like only city counsellor have the right to speak in a city council meeting). Since I'm being pedantic, state and local laws also allow some others to address Town Meetings for specific things (like town department heads).

If a board has a "general public input" time, they cannot restrict who talks to even "just residents" or what they say. If a Town Meeting had that kind of "open mic" time they presumably would have to let anyone (voters and non-voters) speak, but I have never heard of a Town Meeting having that, usually you can only talk about specific warrant items.

If someone wants the long discussion of why Town Meetings (as opposed to generic town board meetings) can restrict speakers: 1st US circuit court opinion in Curnin v. Town of Egremont. It is short and readable.