Join the Impact is a new coordinating site for the fight for same-sex marriage. They list all the protests scheduled around the country for Saturday 15th November. Please take a look. Please consider attending something near you or at least spreading the word to the degree that you can.
The Seattle event is scheduled for noon in Volunteer Park--though if you show up early, around 10:30 am, there will be pre-rally festivities... (Thanks to Jill for the info.)