To file for divorce in any state you need to meet its residency requirements. These requirements vary by state. Two additional things that you should consider when thinking about relocating are what the divorce laws are where you are compared to the laws of the state that you are moving to, and what is the impact on any children involved. To the first point, you want to make sure that you aren’t filing for divorce in a state where the divorce laws are less favorable to you. To the second point, courts can and do frown on one parent’s leaving the state without the other’s consent. A lawyer can help you figure out which state would be best to file in and how to negotiate and interstate custody issues.
The date on which earnings (including retirement contributions and other income) becomes separate property again, is the so-called “valuation date.”  The valuation date is the date of the initially scheduled prehearing settlement conference, unless the parties agree to a different date, or the court finds that a different date is fair and equitable.  In my experience, the Court seldom exercises its discretion to use a different date. One situation warranting a different date is where the parties have been separated for years prior to commencement of the divorce, and have been living separately, with separate accounts, insurance, bills, etc., during the separation period.
Mediation is one of the most frequently used methods of negotiating a divorce settlement. In divorce mediation, you and your spouse—or, in some cases, the two of you and your respective lawyers—hire a neutral third party, called a mediator, to meet with you in an effort to discuss and resolve the issues in your divorce. The mediator doesn't make decisions for you, but serves as a facilitator to help you and your spouse figure out what's best.
When deciding which party to award a marital pet, a compelling argument is the pet’s attachment to the children. If there are minor children involved, who are very attached to the pet, the Court will likely award the pet to whichever parent has primary residence of the children. Another compelling argument is which party cares most for the pet. If you can prove that you were the one primarily responsible for feeding the pet, taking it to the vet, walking it, etcetera, then you will be much more likely to be awarded the pet.
You can also go to court to get an order to change or set a parenting time schedule or for supervised parenting time. The court may send you to a parenting time expeditor before the court hears your motion for a change in parenting time. The court can order mediation or you can voluntarily agree to use mediation to try to resolve parenting time problems. If one parent denies parenting time, the other parent can go to court to request more parenting time or even to change custody. The court will look at whether or not there was a good reason for denying parenting time. Abuse of the children would likely be a good reason to deny parenting time.
In addition, a finding of irretrievable breakdown must be supported by evidence that either a) the parties have lived separate and apart for a period of not less than 180 days immediately preceding the date of service of the divorce petition; OR b) there is “serious marital discord adversely affecting the attitude of one or both of the parties toward the marriage.” 
During marriage, we kept our paychecks, bank accounts, and credit cards separate. How does this affect the division of assets and property if we get divorced? In Massachusetts, all of your assets and debts are considered marital and belong to both of you. It doesn’t matter whose name is on the accounts or credit cards or who paid which bills during the marriage.