I think expecting or hoping to see suits and jackets at Disney's nicer restaurants is extreme. Don't get me wrong, it's definitely refreshing to see individuals dressing up when going out to dinner, but a suit/jacket in basically any Disney location except V&A's and Shula's would be overdressing.
But, that doesn't mean I'm supporting bumming it either. Wearing 'jorts' (not sure why anyone would ever wear jean shorts to begin with), a graphic t-shirt and banged up sneakers is effortless and unbecoming considering the establishment HAS A DRESS CODE. The people showing up at nice restaurants with their Mickey Premium stained t-shirts and flipflops in worn out park attire don't hinder my experience, but I personally think it's ignorant IF a place has a dress code, to not meet it.
People try and downplay the lack of adhering to the dress code with Disney's nicer restaurants on the park and "being comfortable all day" blah blah. It's not that hard to grab jeans or khakis and a nicer shirt. The guests who dine at nicer restaurants at home are more likely to dress according to the dress code, while those who don't really eat at upscale places and are 'going all out' on their
Disney dining plan are least likely to adhere to a dress code. It's funny every time I would hear a table ordering as expensive as possible because they're on the dining plan, the tip is always short and they're always in park attire. "The lobster tails are $79, I'm getting that!"
I get it, dressing 'nice' isn't comfortable for everyone. I hate dressing up, but if it's becoming of the place and they have a dress code, I'll do it. I rough it daily with plain jeans faded with skoal rings and a plain cheap t-shirt and boots for the most part. For our Victoria and Alberts reservation in December, I'll happily be in my Brioni suit. At the signatures, nice jeans, casual shoes and a button down or polo.
In the restaurant industry, your dress DOES matter to the overall experience. I'll tell you first hand from experience the waitstaff approach and interaction will be better 99% of the time when you're dressed to the establishment's dress code. The servers will expect a lesser tip and their focus will be on those who are dressed the part. Dress codes aren't a suggestion.