That sounds easy and fast, doesn't it? But first I had to take the bus in Kanchanaburi. 3 a.m.
Bangkok's Southern Busternimal 5 a.m.
Bangkok's main station Hua Lampong 5.25 a.m.
My train left 5.55 a.m. I didn't dare to take a picture because it was only 3rd. class. That's the only class available. The good new was that it costs only 48 Baht (~US$ 1.35) for the ride. ETA 11.45 p.m. and the train landed smoothly on Aranyaprathet's runway at 1 p.m. 
That's Thailand
Nice clean airconditioned room in a resort next to the border: $15 ... that's acceptable, isn't it? And the price is even more acceptable if you share the room :-)
As I'm Thai I had no problems. But my companion had to get a visa. As expected (and read on serveral Internet pages) the first Cambodian police officer asked him in a room. There you have the choice. The visa is US$20. The police officer will ask for 1,000 Baht. That's almost $30. Your choice is to pay 1,000 Baht and get your visa within 3 minutes. Or you refuse, insist to pay $20 and wait a couple of hours. If you pay they will offer you to get the Immigration stamp within another 3 minutes. That's 300 Baht more. Who cares? We are on holiday, aren't we?
If a Cambodian police officer gets some money you can do whatever you want. Attention: never try to birbe a Thai police officer at the border. That could backfire!
(When caught by driving without helmet 100 Baht is okay
)
Then suddenly the world changed. Colors disappeared. Grey streets, grey buildings and even people's faces turned grey. Dust irritated my eyes, strange noises attacked my ears and what was this awful smell?
Welcome to Poipet!
A crosswalk just for me. That's awesome!
I'm not sure why they are doing this. In SE Asia nobody (NOBODY !) will stop when you cross a road. No matter whether there is a Pedestrian crossing or not!
Because you can easily be lost. For example:
You look straight ahead...
...and to the left...
...and to the right...
...and back...
I'm sure you got the point 
That's real fuel in Pepsi bottles. At fuel stations you can't buy only a liter. But sometimes you have to, because you don't have enough money. This is the solution:
I almost forgot to mention that there are several casinos in Poipet. Actually they are not in the town, not in any town. Neither in Thailand nor in Cambodia. They are situated between Thai and Cambodian immigration. So Thais can go there without entering Cambodia. Many people love it because in Thailand any gambling is forbidden by law!
I liked the casinos and I bought chips for 300 Baht (US$ 8.50). No more than 25 Baht each token. After looking around a while I decided to try 3-card-Poker. None of the other players at the table had 25-Baht-tokens. Their smalles ones were 100 Baht or even 1,000 Baht. But I knew that there's no way to win. And I was right. After I lost all that money I looked around again and left the casino.
I was curious to see it and now I'm sure I will never try it again!