Okay, it's not a story worth being upset about. Let's break this down:
You bought a WiFi iPad for a feature that isn't listed anywhere on Apple's web site, was rumoured a year or more back when tethering came in but was widely disproved and two minutes searching on-line would have shown this. Sucks that you were given bad info (I'm assuming by Apple but you don't specify) but it's an accident, nothing more, and if it was a critical feature you really should have read up on it yourself IMO.
On the delivery date you're getting upset about a difference of ten days. Again, a minor annoyance but no more than that surely? Or have we really become so impatient as a society that a two week delay is the end of the world?
You buy a unit in-store and it has four dead pixels... Umm, without wishing to sound rude, these things do happen. Some units will be faulty, especially when you're talking about millions of devices being sold. You actually got a genius appointment pretty quickly considering the time of year and number of new product launches, when I had an issue with my first iPhone recently wait time for any store in London was over a week. They offer to replace with a 'brown box' unit which... uh, is different from a retail model how? Another fault is unlucky but they sorted it out for you there and then so no harm done.
So to be honest I'm not entirely sure how you get from there to Worst. Launch. Ever! You had a couple of minor problems, one of which was more-or-less self inflicted (the GPS thing, if you know enough to ask that question and it's a necessary feature for you do your own research on top to make sure). I do have sympathy for your luck mind, I've been there myself often enough to be on a first name basis with my local store manager (last few years have seen my Macbook Pro, iMac, iPhone 5 and iPod Nano all doing this dance) but Apple always do their best to make things right and no product range will ever see a failure rate of 0%. To then extrapolate your own experiences out to encompass the whole of Apple's launch is, frankly, ridiculous.
From what I've seen and the posts on this forum I'd say they've done pretty well. No major faults, definite reduction in cosmetic problems from the iPhone 5 in fact all the complaints seem to be over a lack of retina.
