Can I restore a backup from an iphone 6 to a 6 plus? And will all my screenshots, pictures and videos still be saved?

My iphone 6 got water damaged and is not working. I'm going to try to get an iphone 6 plus instead. Can EVERYTHING from my 6 be restored on my 6 plus? I especially want EVERYTHING from my camera roll. I backed it up to my computer. So can I restore on the 6 plus, and if so, will everything be on it? Contacts, apps, camera roll.

I don't see why not. Its how it would work if you are going from an older to a newer iPhone or vice versa or any iPhone to another iPhone.