If there's a hard way to learn a lesson, I'm sure to stumble upon it. So let me share with you my "wisdom" on this topic:
During my last stay at the WL, my fav resort by the way, I decided to stop and grab a quick bite to eat at WC before heading back to my room to change for a dip in the pool.
Well, seems a lot of guests at the WL get the same idea, and they all descend upon the restaurant without a priority seating arrangement. Breakfast is the same way... folks wwander down from their rooms, hungry and looking for a good meal. So whether you're staying at the hotel or coming from someplace else, I'd totally recommend make a PS if at all possible!
Richard