A person with standing certainly may bring the action in court without a lawyer, assuming he or she knows what to do. Alternatively one could look for a lawyer who has experience bring open meeting act claims. Just be aware that even if you invalidate the final action taken due to failure of the public body to provide advance notice of the meeting to take final action that the public body could simply do it over, provide notice, and enact the same decision. If your goal is simply to ensure compliance with the Act and you are willing to devote the time and money for that then it may be worthwhile. If your goal is to try to permanently reverse the action taken then it may prove futile.