What time does same day shipping usually arrive? Can I buy boxes at the Auburn, WA location?

Yes, and same day shipping doesn't mean same day arrival, but would be there by the next day, but u can will call and go pick it up

You can order through uline.com and same day will usually arrive the next morning if you order before 6pm. I'm actually employed there and we have like every kind of box you can think of! If you have more questions or need additional info, call the 1-800 number and you can always talk to a real person, really fast. Hope this helps! Thanks!