Pros: I like that everything is done fairly quickly and efficiently.
Cons: It may be a cultural thing for some, but two of the flight attendants did not smile at all. Not even really an acknowledgement when I said hello to them. And I tried throughout the flight to see if it was just because they were too busy or simply did not hear or notice me. It's not a big deal now, but it can be if the whole staff were to become silent and non-interactive.