For the (north)European vacational charterflights wich primarely is heading for the countries surrounding the Mediterranian, 'walk-in/outs' is still the norm at the destinations!
Even for many of the outbound airports of this charterflights, wich often is smaller local airports, is the trick with transportation to the distant plane often the way to do it!
As primarely enjoying holidays in Greece, I totally agree with joy ride (in reply #3) about the smell/looking -experience: Hitting the wall of heat (wich is the aim for the trip) in the door and getting the odeours of tarmac, jet-exhaust and thyme direct into ones nostrils is to me a tell-tale sign of vacation-start ;-)