Going is pretty straight forward...... coming back is dependant on where you are coming from. I go to Panama quite abit and sometimes when you go to counter they have no idea what a jumpseater is... I have found it helps to be in uniform but you hopefully will have somebody who understands you enough to look it up in the computer. Obviously most destinations see many more OLJS so will not have a problem with this.... I have been told you do not need to list, just go to counter,,, be early so you make TSA cutoff, also if possible get a roundtrip ticket or some type of listing from USA side as this makes it much easier