Well, I picked "not sure", and here's why...
My initial reaction was, "Hell, no!"
But then I told my husband about it and he said, "Hang on, if they're offering something like that when we travel down to Universal in October, I could see going for it."
See, we enjoyed a very similar experience at Hollywood Studios once, when my husband was down for a conference. They closed the whole park to everyone except conference attendees. There were carts around with free snacks. The place felt almost empty. We rode TSM as much as we liked, without a wait. There were even special fireworks, just for us!
It was a magical evening.
Now, I don't think they will offer this in October, since obviously they'll be having MNSSP instead (which we're planning to do, actually). But, if we were, say, going to Universal this April, and wanted to pop over for an evening at Magic Kingdom, then this wouldn't seem like a bad deal at all. Assuming they do keep park attendance way down, of course!