Find out how many people have real interest to bring their kids, and which age

[wolframkriesing]

• [ ] find out asap how many kids
• [ ] find out the kids ages
• [ ] do this in a GDPR compliant manner
• [ ] set a deadline (maybe 2 months before start)
• [ ] put the "questionaire" on the website
• [ ] tweet about it and collect the interest
• [ ] create prepared email, which contains all info to be filled in (?subject=....&body=....)