Eight-year-old Frederick Jozwiak, left, watches his older brother Julian, 10, hang off an apparatus, as their little brother, Vincent, 4, and their dad, Maciek, watch during Frederick’s birthday party at Ultimate Ninjas on Feb. 19, 2021, in Glenview. It was the first birthday party event held in the obstacles and fitness facility this year since COVID-19 restrictions were loosened. (John J. Kim / Chicago Tribune)
Kids’ birthday parties are back on the calendar — but with smaller guest lists, no big cake
