Wishes at the MK will probably vary in July.. somewhere around 9pm or 10pm. You could see these fireworks from the California Grill which is on top of the Contemporary Resort. I would go with an 8 or 8:30 pm reservation. Even if the fireworks are at 10pm you could stay and watch from the outside deck if you are done eating by then. Note they do not rush you through meals at the Calif Grill so you may be there two hours anyway.
Illuminations will almost certainly be at 9pm at Epcot. Rose and Crown has the best view. I suggest an 8pm reservation for that.
Fantasmic! at the Disney Studios sometimes has two shows during peak times. The second one is always less crowded. You can eat at the Studios or the Boardwalk area. You can either walk or boat over to the Boardwalk area from the Studios. You can also use the Fantasmic! dinner package. You eat at a selected Disney Studios restaurant and they give you preferred seating tickets for the show. I believe this is only for the first showing.
Try checking out the info and menus on allearsnet.com.....dining....menus. They have all the WDW restaurants listed. For the Boardwalk area check out Boardwalk Inn, Beach Club, Yacht Club, Swan and Dolphin.