Ah yea in that way they are similar. Japanese kids get Otoshidama (new year money basically). Not many of my friends have kids but I think it was like 5000-10000yen or something ($50-100). Older kids get more. I dunno what age it went up to. So yea lots of kids with money too.
I can't quite remember as I was on a different type of contract but I'm pretty sure that one of the bonuses comes in December as well. Or at least around winter time. So you end up with adults and kids with lots of money to spare, lots of time off, sales etc. So yea basically a perfect storm of consumerism.