He says he'll 'happily' [='gladly'] postpone the appointment.
They have been 'happily' married for 12 years.
We 'happily' accept credit cards.
(..) You know, people think... princesses are supposed to wear tiaras... marry the prince, always look pretty... and live happily ever after... but it's so much more than that. It's a reaI job. You are an extraordinary person, Grandma... (..)2001 The Princess Diaries