At least one baby is in the crowd watching the liftoff, but the entire crowd is reported as shrunk, and Gulliver says children aren't affected by his machine.
After Wonder Woman is caught and put into a jar, she telepathically uses her magic lasso to send a message to Wendy, Martin, and Wonder Dog. When the message is received, the lasso is left behind at the Hall Of Justice while the three go searching for her and everyone else. Later on, when Green Arrow arrives to rescue everyone, Wonder Woman has her lasso at her side, and is even later on able to use it to sabotage Gulliver's machine.