Orientation should be over 5 hours, possibly spread out over 2 days. The safety videos you're going to watch are over an hour by themselves. You may also have to take a multiple choice quiz to demonstrate your knowledge of the material. Your instructor may give you the answer to facilitate expediency and a 100% score.

Boots are not required, and neither are steel or composite toes, though are recommended. At the very least, you need a sturdy work shoe with anti-slip soles. You could get sent home for not having the proper footware. It should not be necessary for you to have them for orientation, unless they skip straight to the on the job training in hub. If your shoes don't look like tennis shoes you should be good.