We very much enjoy the 50's PTC. The food is good and the atmosphere is a hoot.
There are many wonderful restaurants in the Boardwalk and World Showcase areas of the world. However if you are planning on leaving to eat and then come back to DHS, you will eat up a lot of park time doing this. If on the other hand, you plan on eating after you are fininshed for the day that is very do able.
At the Boardwalk you have Flying Fish which is a 2 TS Signature Restaurant. We went years ago and enjoyed it.
ESPN Club is a typical sports bar and we enjoy it for what it is. It is 1 TS but does not take ADR's. Big River Grille is a brew pub. It gets mixed reviews here on the DIS. We ate there years ago and we enjoyed it. Kouzina is the new restaurant by Cat Cora, the Food Network celebrity chef. We haven't been yet,
At the YC/BC you have the Yachtsman Steakhouse, a 2 TS Signature Restaurant. Most here on the DIS love it, but it is not our favorite. We will not return here. There is also the Yacht Club Galley which gets good reviews.
The Beach Club has the Cape May Cafe Clambake. It is an all you care to eat buffet. It too gets mostly good reviews.
There are many good restaurants at the Swan & Dolphin, but they are not on the
DDP.
We love the International restaurants of World Showcase. We usually get Park Hoppers and do a park during the day and go to Epcot for dinner several nights of our trip. We love Teppan Edo in Japan, Restuarunt Marrakesh in Morroco, Rose & Crown in the UK, Le Cellier in Canada, San Angel Inn in Mexico and Biergarden in Germany
Have a great trip