In order to connect to the Guest Wireless network, you will need to know the current password. The password will be valid from March 31, at 5 p.m. to July 31, 2025.
The current "Guest" password is 4rainier
If you are having an issue connecting to the "guest" network, usually forgetting the network and re-joining will help solve that issue.
To forget a network on your PC: Delete a Wireless Network Profile in Windows 10 – Washington State DES
To forget a network on your phone: Forget A Wireless Network on my iPhone – Washington State DES