As mentioned above you can take a bus (depending on where you are staying at) to MK and then the boat to Wilderness Lodge.
We love to go this route, the boat ride is very relaxing and fun. Also the boats we rode on were not crowded as mentioned above. It is a quick 10-15 min ride.
I will mention though that you want to make sure you go to Wilderness Lodge, not Fort Wilderness. They are 2 seperate things and can get confused alot.
The last time we were there waiting in the WL boat line a family was arguing where to go, they to had ressies at WCC. We tried to explain to them, since we love this restaurant and go every time we are there, but the younger lady kept insisting we were wrong and they got on the wrong boat.
Have fun this restaurant is very good and very fun.