You can absolutely rent bikes without being a Fort Wilderness guest, we've done it several times at both FW and WL.
A vacation within a vacation is exactly why AKL is my favorite WDW resort. My husband and I stayed there for the first time last year and were so completely enchanted that we booked it again this fall. It was both completely relaxing yet there was always something to do, so no matter what your mood you'll have a way to enjoy it. There truly is nothing like waking up to the animals outside your room. Congrats on booking it, I hope you love it as much as I do!
