Actually, the legal requirement for any gaps in between whereabouts is 14 days maximum. More than that you have to provide the proof of somekind ie; hotel bill If you were on holidays for more than 14 days, rent a car bills, airplane tickets, reservations etc. In the worst scenario it can be a letter from a friend or relative.
I had an absolute nightmare trying to get an airside pass....just make sure you are really detailed on it and should be fine