@Background Pony #BA6E  
oh damn that could be right

Do you remember how, despise being MLP’s counterpart for Las Vegas, Las Pegasus resembles more an amusement park than a gambling paradise?
 
Considering the previous, I think this is in fact very symbolic of how people with a gambling addiction end up “trading” their loved ones for money or chances to play more (tickets).

exchange your waifu for tickets machine?

Maybe she’s the player and the dome is part of a giant trackball  
 
Put a few screens around the enclosed area and you have all kinds of fun possibilities.

@Darth Sonic  
I’d like the first one to be true

@Naughtypony2010  
The stallion won her sexy butt, and sent her off to the local adult store!
 
… Or more seriously, her shift ended and she’s getting some lunch.

Interesting is also that she was seen in another scene walking freely around

Maybe the game is inside the machine, like the Jurassic Park or Star Trek games, but instead of a car it’s inside the end part of a McDonald’s Play Place.
 
Hang on, there was something more recent involving a car at Dave & Buster’s. Night… Something, lol. The arcade I go to has incredibly old games. ^w^
 
Ah, damn, now I remembered they got rid of the Normandy VR machine. I liked that one… Sorry, talking to myself. X3

Maybe some weird fortune-teller booth thing? You know, those booth things with the fortune-teller inside. Except instead of a card with some fortune on it, the booth spits out tickets so you can get that glow-in-the-dark spider ring.

Exchange your kids for tickets!

At first I thought she was in some sort of play pin, but then I see the Tickets.
 
So, what is this?

It’s a dating sim game?

Maybe the mare’s a hologram?

Win an enthusiastically willing sex slave!
 
I mean, this seems jarringly dark at first, but then you realize that Equestria does need to accommodate for the more… Eccentric Cutie Marks. Some mares (and stallions) literally need this.

@Vinyl Fluff  
That’s the weirdest game ever

@LadyTheRainicorn  

 
He’s basically saying the mare’s liking what she sees, and the machine’s popping a ticket boner for it.

Notice the machine is spewing out tickets like there’s no tomorrow? Maybe it’s broken…

@ewilles  
That didn’t make any sense

mimic the robot?

I wonder if it’s like those personality measuring booths, how it gauges your attractiveness. Perhaps she likey what she sees.

@Background Pony #09E4  
He’s really good at this game.

How is he winning tickets at this?

I didn’t see the tickets dispensing until this picture. I thought it was just part of a playground-like area with the bubble windows like many McDonald’s have in their play places.
 
But the dispensing tickets and the realization that this is a machine, not a play area, is troubling.

It does look like the male is mouthing the word, “Hey!”