major airports have employee cafeterias and snack bars. Some have also employee bars and lounges. These establishments are often run at cost or even subsidized by the airport authority.

Many of these establishments don't screen their customers - if they do, try to befriend an airline or airport employee and find out where the employee cafeterias are and what type of screening procedure they have.

If there is a screening procedure, ask your new friend to escort you in.

(from the airline passenger's guerilla handbook, 1989, ISBN 0-924022-04-3, no longer available)