You very rarely need to pay the $20 departure tax anymore as it is included in most tickets now. The only exceptions may be on charter flights. The airport is under renovation and will be very nice once finished some slight inconveniences right not but nothing serious. I am sorry that one of the previous posters sees the need to equate buying a soda in a corner store as against buying one at an airport concession. (Actually sodas in the supermarket are 45 cents!!!) A $1.00 soda at a US airport will probably set you back over $3.00. All in all Panama is one of the better Central American airports and I fly regularly within the region.