Have you checked out the Boardwalk restaurants? There's ESPN , Big River, Flying Fish (signature restaurant) &Trattoria . We have eaten at Capt. Grille but only at lunch so can't comment on dinner (we liked lunch). We enjoyed lunch at 50s & Mama Melrose in DHS and both have an all day menu but you should get ADRs before heading over.Unless you are OK with getting a QS meal if no TS are available for walkups.
Another option would be to head over to Disney Springs to eat . Plus you have the restaurants in the Swan & Dolphin.