I want to reenlist in the Marine Corps. I have a JVF1 separation code and an RE-3F reenlistment code. I know I need a waiver?

Do you have a specific question? That sounds like a statement with a question mark added to the end.

An RE-3F is a restrictive reenlistment code which normally comes with a waiver requirement to reenlist but does not necessarily mean you cannnot reenlist. A lot depends on if you overcame the condition that got you the RE-3F