No. The process is just like filling up a car as far as the attendant is concerned. Just be sure to follow all of the safety steps above. Unless there is a sign posted, or some odd local law, there is no special process.
You do need a small amount of space, enough for oxygen to do its thing and circulate. Place the rocks in foil, set them down by the burner--not on top...
Establish a temporary free email account (through Yahoo, Gmail, Hotmail, etc.) and send the email from there. You never have to use that account again.