Tray, my gut instinct is the strategy you mention below is flawed. Most people in the FBOs will be busy with the day job and disinclined to drop everything for a pop up job seeker - if you get past the front desk/security. I suggest a better way of doing it would be to call them and ask the name/email of the head hostie, then drop them a line and ask if you can pop by one day. You're much more likely to get a couple of responses and not annoy them by just pitching up. Of course there is a chance you might catch a wave, but I think a much greater likelihood that you'll get yourself a pain-in-the-ass label. Just my 2c.