From what I understand, it is not a restuarant that started out with wild antics. It just sort of happened with some over zealous cast members. Later other cm's got into the act. I know they try to read you as they start in on you. If you look like you don't want it, you might not get it. Also, there are some CM's that just don't have the personality to do that. Now it would be discrimination to not let someone work there because they are dry and or shy or just plain boring. It really is just the luck of the draw as who you get.
No one should ever expect to get this treatment here. If you do you may get let down. That is the point of the place, its unscripted and unpridicable. If they did the same thing for every table, all the time, it would get to be a real bore. Just go with the flow.
It is kinda like asking to be tagged by the tag fairy. If you ask for some ketchup, expecting the big fuss over it, the good CM's can read this and they may not do it to trip you up. They want to get the people who ask for ketchup and have no idea what is in store.
If you want it, play dumb and innocent. (if the cm is not one of the shy, dry, boring ones.)