I spent my whole childhood staying at FW. This past year my family tried out WL for the first time (we stayed in a Villas) and we LOVED it, we will probably never stay at another resort again.
Don't get me wrong, we loved FW for years too. The cabins provide a good amount of privacy and are roomy. If you want a slower paced vacation, I think FW is the place. When I was young, my family didn't worry about getting to a lot of parks and we never really want anywhere to eat besides the buffet at FW (Trail's End). Since we spent most of our trips just relaxing, FW was a great place.
My family has changed however and while we still don't put a lot of priority on the parks, we do go to more different places to eat now and enjoy spending more time at DTD and off property even some nights. For this reason, FW became less practical for us. It is a big place and it gets annoying to navigate. The bus system is a PAIN and MK is really the only semi-convinent park to get to.
WL makes more sense if you are going to spend your trip going to the parks and doing a lot of stuff. Everything is located right there and there are a few more eating options. If you want a bit more space in your room the Villas are great! I would highly recommend looking into the Villas.
To sum it up, I think it depends on what kind of vacation you want. If you want a more relaxing one than FW is nice, if youre going to do more I think WL has the better location.