I haven't really worked with edible images on cakes. I would like to wrap the  fondant cake around with an image.  I want to also add a name plaque on the side of the cake. Will royal icing be the best way to attach and will that cause any damage to the edible image?

Thanks in advance!

I always applied EI's with a light coat of b'cream.  One might also use piping gel.  Just use a very light coat of whatever icing you choose.   I don't use RI so can't say how it would work.  I am almost sure it will not cause damage to the image.