Simplify the following text for a Grade 12 native English-speaking person.
Original: With the throne tightly secured , Vitellius engaged in a series of feasts , banquets ( Suetonius refers to three a day : morning , afternoon and night ) and triumphal parades that drove the imperial treasury close to bankruptcy .
Simplified: With the throne tightly secured , Vitellius engaged in a series of feasts , banquets and triumphal parades that drove the imperial treasury close to bankruptcy .