Attended the first Celtics game since being closed for over a year as a result of the Covid-19 pandemic. So nice to see the Celtics live again. They are currently allowing 12% of capacity and the seats are VERY spaced out. Food and Drinks are available by pre-ordering via the TD Garden app... they have QR codes that brings up their menus, etc. and you direct the order to the food outlet near your seat. They did a good job with this as well as entry to the TD Garden... all via your cell phone... no more paper tickets.
See the QR codes in my attached photo to check out the menus, etc.