Is it necessary for your attorney to attend every board meeting?

No.

However, because the first and second meetings are the most important, it is a good idea for your attorney to be present to make sure all necessary formalities are followed.  No one wants to start off on the wrong foot.  Having an attorney present will help prevent this.

Unlike partnerships and LLCs, corporations must follow certain formalities at their meetings.  Leading up to the meetings, corporations must abide by notice requirements and other rules.  Failure to adhere to formalities (before and during meetings) might lead to shareholder lawsuits and government investigations.  I strongly recommend that you have an attorney present at these first manager and shareholder meetings, and to help you prepare for them.