I was fortunate enough where my friends lined up on our behalf and got us some cakes so that took away the frustrations of waiting in line to get a piece of cake!
In terms of packaging, the cake as seen in numerous (or many to be accurate) Facebook posts everywhere on the internet, they are nicely packaged and the uncle tetsu stamp on top is very adorable.
In terms of flavour, I dont think it's worth the wait. It taste like those $1 sponge cakes that you can get from the Chinese supermarket (a bit more fluffier) with some cream cheese flavour infused into it. It's very light, not too rich, as expected from Japanese desserts. I would buy it again and again if it's on the way and without lineup. But if i had to line up for 30min plus for it, I think you and I could do without it.
Also, their mini cupcakes, do not get them, they are very dry and not good or special at all.