JTB, old town Kenai is cool, lots of old cabins, old Russian Orthodox Church. Homer is awesome for the views and on the spit is the Salty Dog Saloon.
Out of Seward are fjord tours, You can also hike Exit Glacier.
Mid-late July you can see the mouth of the river full of dip netting fisherman but from the same vantage point are great views of cook inlet.
Can't help with the eateries, not that I have not tried them just was not impressed enough to give good reviews.
Fishing on the other hand should still be decent, you will be on the tail end of the red season on the Kenai, some pinks and silvers will start showing up, make sure to book a halibut trip.
Have fun!