You are correct on the deal. Although this deal is pretty much garbage compared to all the previous ones they have done for 960, so don't waste your money on it.
Take this old tweet of the similar kind of deal back in December for example, the current deal has a small fraction of what they had for offer.
https://twitter.com/flower_staff/sta...80390608556032
Seem like they're throwing just a bunch of pointless/rip off deals lately since the removal of rainbow medals and implement of skip tickets.
I'd advise holding off spending on these deals until Golden Week.