The short answer is “no.” There may be instances in which a Judge requires parties who are represented by an attorney to attend mediation or another ADR process with those attorneys. There are also mediators who will not allow one party to have an attorney present unless the other party also has an attorney present. Generally, however, parties will be able to make this decision on their own, as long as they both agree.
If you and your spouse have been unable to resolve issues involving your children, it may be necessary to have a formal custody/parenting-time evaluation. There is generally a monitory cost associated with this evaluation. This evaluation can be conducted by the Court Services workers in the county your action is venued in, if the county has such a department. In most counties this work is contracted out to third parties. Some parties, however, prefer to retain their own neutral expert, typically a child psychologist with expertise in conducting such evaluations. Private evaluations typically are more expensive than those conducted by Court Services. Whoever conducts the evaluation, however, will interview you, your children, and such third parties who have relevant information as are necessary, including other family members, friends, neighbors, teachers, doctors and counselors. They will observe you interacting with your children, and may also administer psychological testing. At the end of this process, some evaluators will first make an oral presentation of their findings in the hope that their summary will facilitate settlement. If not, a formal written report is issued.
In equal numbers, prospective clients come to me either excited about a perceived ace-in-the-hole because of the other spouse’s adultery, or worried about his or her own adultery. Neither attitude is warranted. The Courts couldn’t care less about anyone’s adultery in and of itself, or the immorality of it. Half the divorces they see involve adultery. In fact, there’s a very real danger that pressing this issue will backfire, making the accuser appear obsessive and jealous.
In this first stage, the mediator works with you and your spouse to lay a foundation for the rest of the mediation. You give the mediator background information about your situation, and the mediator explains how the mediation will be conducted. Depending on how well you and your spouse communicate and what the issues are in your case, the mediator suggests an approach that should optimize the chances of reaching an agreement. You'll assess the issues on which you and your spouse agree or disagree, helping you to work together on an agenda for the rest of the mediation.
Historically, courts would only grant a divorce if one spouse could prove the other's wrongdoing - for example, by presenting evidence of adultery, abuse or failure to support. Fortunately, those times are long past. Minnesota is now a no-fault state, which means you don't have to prove fault-based grounds to get a divorce. It's enough to assert that irreconcilable differences caused the marriage to break down.
Finally, parties may agree to continue child support past the statutory termination date. When this occurs, it is usually based on a mutual desire to support a child through college. Although the Court lacks jurisdiction to order child support beyond the statutory termination date, the Court does have jurisdiction to enforce a binding stipulation of the parties which provides for that.  If I am representing the obligor, I normally advise against this, because one can always support the children through college if one so desires. There’s no reason to get the Court involved.
In some cases, a spouse may be reluctant to attend mediation due to misperceptions they have regarding the mediation process. One party may feel the mediator will decide crucial issues without input. In reality, a divorce mediator cannot compel either spouse to do—or refrain from doing—anything. Others may feel a mediator can single-handedly “fix” all issues in the divorce. If one spouse fails to disclose all relevant facts related to the case, the mediator will be unable to achieve real results. In some cases, women may feel their husband will fare better during the mediation.
In the framing stage, the mediator helps each spouse outline that person’s reasons for wanting certain outcomes in the settlement. These reasons consist of individual concerns, priorities, goals, and values. They are often referred to by mediators as “needs and interests.” Here, we use the broader term “interests.” Identifying interests helps to frame the core goal of the mediation: finding a resolution of the issues that successfully addresses each spouse’s most important interests. In most divorces, many issues need to be examined in light of each spouse’s interest. These include property and debt division, child custody, child support, and alimony.
If you were served with a "Summons and Petition" (you are the Respondent), you should talk to an attorney before you sign the "Answer and Counterpetition," and before you sign a "Stipulated Findings of Fact, Conclusions of Law, Order for Judgment and Judgment and Decree" (which is an agreement with your spouse on how to divide all assets and debts).