Very interesting outlook.Sounds like different expectations between different cultural groups. The Brazilians are more festive and may even expect this kind of behavior. Anglos/North Americans are more reserved and view the performance as clownish and overbearing.
Sounds like you need to find a group of people you can click with on different levels - musically, culturally and professionally. At the very least, you got some great experience playing with this band and it will serve you well in the future.