Both. Same price either way.
Both. Check out city pass for a nice discount.
Both. In addition to that, you can buy citypass as well. If you are a member of Seattle Central library, you can use free passes which allows you to reserve tickets 2 weeks ahead.
Both options. However if you are visiting city and want to check other attractions City pass will be a good option.
🤘
Both
At the door, and online. Also it closes at 5 👍
On site purchases available
You can purchase on site at the door.
You can walk in and buy at the door (did it myself)
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