Okay, I'm rather new, but this is the first time this has happened . . . we received a picture book that has doodling/drawing on almost every page.  On some pages it is just a squiggly line through the picture, but what do I do?  I'm sure it was someone's little doodlebug running loose with a pen, and that stuff could be accidently overlooked on a page or two . . . I am assuming I mark it as having a problem . . . but perhaps they just overlooked it.  IDK.  Help!  TIA.

Yes - mark it received with a problem.  If you want, you can take a step further and PM the person and ask for your credit back.  Just be friendly and explain the situation.  Hope that helps!

You would be perfectly in your rights to ask for a credit back.  Even though it's a kid's book, it's unpostable if it has writing in it like that.  A name on the inside cover or someplace discreet would be acceptable. But scribbling isn't.  You do not have to send them the book back either.  You may not get your credit back but it doesn't hurt to ask. You don't have to ask for it back either.  But I would mark it RWP and let them know that the book should not have been posted. So they don't keep sending them out like that.

Mark it "RWAP - Damaged by Sender" and politely ask for your credit back (if you wish). If you request a returned credit, give a deadline for response for 1 week later. If the sender doesn't respond, report the sender to R&R usinng the "Contact Us" button.

Even if you don't feel like asking for a credit back, you should still mark RWP and give the sender a polite head's up that they may want to check little Johnny's books more closely in the future before posting!