Preparing my iPad Mini 6 for Service. Wondering if my backup saves keychain?

I don't sync my icloud keychain with my mini 6 for personal reasons.. So my ipad keychain passwords varies from my other devices. I'm backing up my mini 6 using my Macbook Pro... My question is when I restore my backup in the serviced ipad in the future do I retain all the passwords? I know all of the apps would be signed out and would have to be re-logged.