As the PP said, if Wishes from a restaurant is something you really want to do, keep trying. However, if you are unable to get anything for Wishes time, don't feel too bad. 'Ohana is pretty far from the MK, so the view of Wishes is pretty distant especially when you add the extra distance from where the fireworks are actually shot off to the MK itself. CG is nice if you can get a window seat, but standing outside from the top of CR can be a pretty brutal experience in January. Narcossee's is also night but from that vantage point I would still rather just watch from MSUSA. This is not to mention that we find the food at all 3 of these restaurants to range anywhere from average to awful.
The best view of Wishes always has been and will probably always be from MSUSA. Something I would suggest, especially if you don't have little ones with you, is to make an ADR for about 9:50 at any of the monorail resorts, this way you can watch Wishes from MSUSA before heading over to a much quieter and relaxed meal. I would go with Citricos since it has, by far, the best food in the MK area (not counting V&A's).