As Bcv23 says, time will tell. And as Cjsmith says, you accept it--OR you move on. And that's what I'll do--move on. CG isn't all that good to be forced to dress up and enforcing a dress code is a direct slap in the face to all those would-be diners who dress theme park casual because it's HOT in Florida, because they are on vacation, and because they are coming from somewhere (or going somewhere) with dinner at the California Grill in between.
My own hunch is that this sudden code enforcement is based on some belief that a correctly dressed and thoroughly scrubbed crowd will somehow "behave" better--not linger 2 hours over a lemon water waiting for Wishes to start, or allowing their kids to run all over the restaurant getting in the way of servers and patrons alike.
Of course that belief is quite false, and I anticipate subsequent posts where folks report an hour wait for their PS seating, or that their meal was disrupted by unruly kids, and the poster wonders how and why that could happen at such a fashionable restaurant.
lorelai: As to your original post--there is no dress code REQUIREMENT just yet. But in anticipation, and in case you show up somehow "incorrectly dressed" and are refused admittance--go somewhere else. Narcoose's is a fine spot for dinner and Wishes, and at least for now, you can get in there w/o any worry.