Well besides whatever extra bonuses they may toss in, the NISA store usually ships their games out pretty early. So it is possible and I have gotten their games like on the Friday before it comes out.
Sorry about that. But I set it up so you can remove the watermark whenever you want (hover over it and X it out). I'm not a fan of watermarks either, but my videos tend to get thousands of views on YT so I'd like it if viewers knew where it was coming from.