On the fronts you can see the 3 bolts that are threaded into nursery's from inside (under the vehicle and from engine bay). Soak the threads with PB Blaster or equivalent before trying to remove them. Especially considering that you are in the North. For the screws that have plastic clips, an open end wrench (forget what size) is perfect to hold them. A ratcheting 10mm will be your best friend for this project.
For the rears, you can to the same on the most rearward bolt but the ones in the front of the rear fender are tricky. Also, for the rears, I pulled the inner fender liners completely out. This gave me the opportunity to clean them and the inner fender wells before reinstalling. Leave them in the sun and they become super flexible. Also bought a pack of 100 Christmas tree clips from Amazon. Have about 85 left over for other things.
The small pieces behind the front fender are tricky, you cannot get to the back of one or two of the bolts so be careful
Worst case, you will be cutting some bolts and buying a nursert tool to put new threaded fittings in