Hi, Sherry! Traveling from resort to resort takes a bit longer compared to resort to theme park since you will need to make a transfer in most cases.
To get from Pop Century, take the bus to the Magic Kingdom, then you will hop on the resort monorail which will take you to the Polynesian. Expect this trip to take between 45 - 55 minutes.
To go from Polynesian to Fort Wilderness, take the monorail back to the Magic Kingdom, and catch a boat from the boat launch area over to Fort Wilderness. This should be about a 40 minute commute.
If you would like to calculate additional routes, go to
www.ourlaughingplace.com and scroll to the bottom of the page to the Transportation Wizard. By choosing Point A and Point B, you will get route options and approximate travel times. I usually plan on a few extra minutes in case of a bus delay or crowds.
Have a great time on your Disney World vacation!