Quick visa on arrival to hanoi

I bought my ticket to hanoi only 7 days before my planned arrival in hanoi.  Based on the way It went the first time I would have had to mail my passport to the vietnamese embassy and it likely would not have been back in time.  Instead I waited until 12 hours before the trip and I purchased a "Visa on arrival" from a travel agent.  I paid extra (29 instead of 19) to get the one day turn around instead of the standard two day turn around.  
I just selected the most professional modern looking site at the top of the Google search results
My first problem was that I put on my application the wrong date.  I was hurrying and miscalculated my arrival date.  I quickly emailed the support address and but they weren't open fir the day yet.  My flight took of at 6 am the next day which gave the company a full business day to respond. They had the visa by midnight and I printed out two copies.  I also printed out two application forms as recommended on the email.

I had to show the vietnam visa on arrival letter at the sandiego airport before they would allow me to board.

I filled out the application forms on the final vietnam leg.

When I showed up at noibai airport there was a counter where the person accepted from me the passport and page 1 and two of the visa letter and told me to go sit down.  He did not take two copies of the visa letter.  And he also did not take even one copy of the application form I filled out.

I started in line at 10:59 PM and was sitting down.  And I had visa in my hand at 11:20 .  They never requested the application forms that I filled out.  

They only took one of the two passport pictures and it only cost 25 USD.   I haven't added it up yet,  but I think this is the way to go over a more formal VISA through the Embassy.