I was going to tell you to "get your ass to Mars" but from the trailer, it doesn't look like they go there this time?
In the original PKD novella, "We Can Remember It for You Wholesale" Quail (I'm assuming they made it Quaid to "butch" it up a bit for the movie..) did have a spy mission to, or for, Mars that are supposedly uncovered by the false vacation memories he bought, or perhaps the spy memories he's having just are the ones he did purchase.
Either way, any trips to Mars in the story, if real, were in the past, and not covered in the narrative.
He then escapes the .gov trying to kill him to keep his secrets (if that's really happening) and he then gets away, makes a deal they won't kill him if he agrees to get his memories erased again, and replaced with his deepest wish, that he somehow stopped a Mars invasion as a child. Then the same thing happens again, trying to implant the memory uncovers now that this memory is also actually true too.
Of course, it gets more and more fantastical, so you're left wondering if he really is just going insane and something went wrong with the implanted memories or not. Or if it even matters if the reality is 'real enough' for him etc.
So not going to Mars is possibly more in line with the actual source story.
(I always thought it would have been a blast to sit down near PKD somewhere in public with a friend, pretend we didn't know him, or recognize him, then have a conversation he could overhear, where in matter of fact tones, we discussed "Getting clearance to participate in Reality - Level 5, and what we thought about the Centaurans lobbying "The Department" to allow their presence known to at least Reality - Level 3, but obviously "The Minister" wouldn't allow it. And maybe something about "All the people who thought they were dead from WWIII, on Level 1, but really weren't."
)
