we stayed at POR from 9/10-9/14. We didn't need a PS for boatwrights. In fact, the entire resort (parks included) were so dead, we didn't need a PS for anything. I hadn't made any since we had just rescheduled our trip due to the Hurricane but we must have gotten lucky. the parks, transportation, and resorts were all empty and we didn't wait for anything!
If you're staying at POR, may I recommend making at least one evening visit to the River Roost lounge in the main building. There's a great piano show there at night and they have fabulous cocktails. My personal favorite is Miss Melodie's Colada!
Enjoy your trip!