Henry Peters, 10, of Guilford, was an ad executive for the radio station, 24.7JA.

"He's doing really well. He's enjoying the experience," said his mother, Natalie, as Henry ate a sandwich in the cafe on his lunch break.

"I've sold, like, four ads," Henry said between bites.

"I have to deposit the checks and help the CFO and the tellers if they need it," said Bank of America savings officer Jack Witherspoon, 10, of Roland Park.

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"He's in heaven," said Megan Auvil, of Timonium, whose son, car aficionado Coyle Saunders, 11, was chief executive officer of Toyota Financial Services.

In addition to his other mayoral duties, Essex signed certificates of appreciation to parent volunteers at BizTown. And, he collected funds to donate to relief efforts in the wake of superstorm Sandy.

Essex said he was trying to follow in the footsteps of his father, Jonathan Thayer, Constellation Energy's chief financial officer.

"I want to be like him," Essex said. "I'm a little bit tired, but it's worth it."

"I think he realizes that being mayor is a lot more work than he thought," said his grandmother, Diane Essex, visiting from New Hampshire and spending the day as an assistant in City Hall.

Being related to the mayor "feels pretty special," she said.

The students acted professionally throughout the day, except for one spontaneous, uninhibited moment in the middle of BizTown, where they gathered with one collective consciousness.

Then, they danced like chickens.