How to Apply Smoothly for A Canada ETA
http://mysmartusaestavisasite5794.aircus.com/helpful-guideline-in-making-an-application-for-a-canada-eta
Also if you have booked your tickets currently, you won't still be able to get though the airport if you do not have your ETA. For people who are American citizens, they will certainly not need the paper. You will