The festival is celebrated with processions, fairs and family time. The traditional greeting for Bengali New Year is শুভ নববর্ষ "Shubho Nabobarsho" which is literally "Happy New Year". It's a public holiday. The most likely thing is Bangla arts are great. I personally like that too much. In 2016, the UNESCO declared this festivity organized by the Dhaka University as a cultural heritage of humanity.
For every Bengali people it's really a important day and it's really a festival day for all. Happy new year to every Bengali's.