For the dining packages, if you're ALREADY planning on eating at one of the restaurants incorporated, then I say why not. If you're not already planning on eating at one, then I wouldn't shell out the money just to do the dining package.
For RoL every section has good views. FP section is more center but it's nearly all the same.
FP, dining, standby all have their separate individual entrance and sections.
With a dining package I'd still show up 30-45 min before the show. About the same time as a FP guest. Standby I'd show up 60+ min before.