(1) Marriage is a civil contract between two persons who have each attained the age of 18 years, and who are otherwise capable. Washington state law requires a three-day waiting period before a marriage license can be used.Fill out the application online. 007, Definition—Religious organization. Note: Washington state law requires a three-day (3) waiting period before you can get married. Applicant Requirements. Both applicants must have current photo ID as proof of age and identity. Both parties must be present to apply for a marriage license at the Auditor's office. No appointment is necessary. The ceremony must occur in the State of Washington and be performed between 3 and 63 days of application.