[Modernman]

I´ve heard that the airports are working at their terminals to make boarding through the 5 doors (!) as fast as possible.

I wonder how many airports will be willing (or physically able) to make this type of investment?

[Michael81Dus]

AFAIK, a lot - because this plane will be used by many airlines. Maybe it was the wrong decision of Boeing to set on the smaller planes... we will find out in a few years.