[Yusuke picks up the dice, but pauses at the question, and gives Akira a long stare. He... must be joking, right? He doesn't actually believe this is some kind of mind palace they accidentally infiltrated or a weird pocket of Mementos they stumbled upon, right?

It is a casino, people are openly going "to town" with it and Akira doesn't get how none of this is okay? ...did he miss something when they were back home, is this what Akira does on a daily basis?! No, that's ridiculous.]

You... have seen this place?

[Seen, understood- Yusuke didn't expect to be the one to explain this to him. He takes the dice and places them on the table, turning them on purpose (not tossing them!) until they are showing the most obscene thing one can get from tossing them.

Then he turns and shifts closer a little so he can keep his voice just for Akira to hear.]

This- isn't a Palace, Joker. There are... intense repercussions for ditching the games or for not attending these events.