East/West coast culture
My dad worked for Westinghouse at the time it was purchased by Northrop Grumman. His team flew to the west coast to meet with new collaborators, all of his team wearing normal east coast business attire: suits. Uncomfortable meeting when half the group was suited and the rest pretty much ready to surf.
Next meeting was is DC and the left coasties all looked uncomfortable in their new, never used, off-the-rack suits and the easterners kept looking down at their new polos because it felt weird to wear ID badges with no tie.
Finally someone said "Ok, lets meet in the middle... khakis and polos or button down, no tie unless meeting with a customer..."