You'll get a lot of examples from people here, but it is not giving fits to the majority of people using it. It is true that it is over budget and behind schedule. So I suppose that it was a bad idea from the start, but I for one still really like it. However, I do acknowledge that it is seriously flawed in the grand scheme of things. Even though it is "buggy" or a down right failure for as few people as there are it is still a problem. You cannot have a system as comprehensive and invasive as this have even this many problems. People are having problems with the package not being tied to the bands, the bands not activating properly, bands not working on the entry gates/checkouts/FP returns, etc.... Disney needs to work these bugs out before it get so bad that they have to scrap the whole thing. They are going to start losing (continue to lose) a ton of guest money to rival parks if they don't.