What are the advantages or disadvantages of waiting or filing immediately?

There’s a 90-day waiting period to finalize a divorce, as the courts want to keep people from marrying frivolously. FYI, they still let people marry frivolously. If you file immediately, you may be doing it in haste, but if you’re serious, you may finish faster by filing now. Most people who use mediation file at the end. Most who use lawyers file initially so they can start digging up documents, paying experts, and deposing all their witnesses.