Hi Evelyn!
Unfortunately, while it may look close on a map, it is a long way away and there is no walking path between Port Orleans and Epcot. In fact, there is no walking path from any Disney Moderate or Disney Value Resort to any theme park.
The only resort that allows you to walk to the Magic Kingdom is the Contemporary Resort, including Bay Lake Tower. The following resorts are on Crescent Lake between Epcot and Disney's Hollywood Studios and you can walk to both of those parks:
- Beach Club
- Yacht Club
- Boardwalk Inn
- Walt Disney World Swan
- Walt Disney World Dolphin
While you can't walk from Port Orleans to Epcot, Port Orleans is my favorite Disney Moderate Resort. I specifically like Port Orleans Riverside, but both Riverside and French Quarter are nice. If you stay at either, you are allowed to use the services and amenities of the other, including the pools. There is also a boat to and from Riverside and French Quarter to Downtown Disney. The boat is especially nice and relaxing at night.
Enjoy planning and write back if you have any more questions!