No backpacks, 14 x 14 x 6" maximum dimensions.
I would say similar to the Airport.
Last visit bags had to be clear.
When I go there I try to take as little as possible with me. The last time I went there they were doing very thorough bag searches. It didn't seem like there was necessarily a restriction on the size or type of bag, but whatever bag you bring be prepared to have it looked through.
Only small bags are allowed in at the main entrance. 8" by 14". But large bags can come in if you get them searched at Suite 150 in the Annex building near the Moda center box office.
Depends upon the event
No drugs, weapons,explosives, bio hazard materials, nuclear waste, no body bags, etc. You know the usual. Realize you will be in a place where you will be sharing space with others so try and think of other peoples comfort not just your own.
Must be small in size. I don't know if they search them at some events.
same as carry on for airplane
Thanks! Your answer is awaiting moderation.