Just a tip re: the 26$ USD exit tax. It may be paid in advance at most hotels. With that in hand you can skip the main line and get to check-in a lot faster. The airport is suffering majorly from increased tourism and business travellers. Hopefully the new gates they are adding/repairing will help alleviate the wait times. Our flight out (Dec 1 2007) on Air Canada (AC999) was delayed by various (given) reasons: not enough busses to get you to your plane not enough security to escort you to your plane too many planes etc. My best advice is don't get too worked up like some passengers I saw relax and enjoy your final few moments in beautiful Costa Rica.