Weissbiers aren't my thing, but I'll respect your commitment to it implied by image size.
Also, you might know, but are any Japanese beer places kid friendly? Addie will be coming with us in April, and I honestly never remember seeing kids anywhere we went.
You know, I rarely see kids, but AFAIK, they are all kid-friendly. Bars aren't but the craft beer spots seem to be gastro-pub-ish in nature. That Craft Beer Base place we hit in Umeda is run by a Mom who owns several places. A really nice one that is the newly-reopened dIG BEER BAR is right across from a park.
I know Lingua World Café is organized AROUND having it be a family space. Kamikaze allows kids no problem, though people smoke there.
I think you'll be fine.
OH, while you're in Tokyo, you've got to hit Devilcraft and/or Craft Beer Market. The latter was my dinner spot after a great day of interviews at Disney Japan — stupid expensive real estate, but CBM is reasonable and has great food.