Bike rentals are not available at Wilderness Lodge because of the Reflections construction. They are available from the bike barn at Fort Wilderness for daily rentals.
You may or may not be able to park at Fort Wilderness without a reservation or ADR. If you can, you’ll park at the main parking lot aka the Outpost and take an internal bus to the Meadows Trading Post where the bike barn is. If you aren’t allowed to park at the fort, you can park at the TTC, head over to MK, and take the boat to the fort before transferring to an internal bus. Uber/Lyft will drop off at the Outpost and aren’t allowed inside the Fort roads. Minnie van is an option and they should be able to drop off at the Settlement or the Meado