So they justify the unification of Terrans and Xandar by explaining our planets were both created by the Big Bang. We are invited to travel to their world through hex jumps, powered by the Cosmic Generator. In the preshow, a celestial named Eson steals the generator, looking to erase the Earth from existence. He believes we as a race have made the galaxy impure, and uses the quantum generator to create a portal in time, back to the big bang, to erase the earth from existence. Rocket notices our evacuation shuttles are the only thing small enough to fit through the remaining piece of the portal to the big bang, and reprograms them to take us in, with the Guardians in tow.
Yes, I'm fully aware of the convoluted back story. My question is, why deal with time travel at all? What effect does it have on the ride experience, physically or aesthetically? If you set up time travel at great length as your attractions central plot element, you expect it to have some impact on the ride experience. This would literally be the same ride if you were chasing Eson through space. I'd bet a not-insignificant amount of money that a lot of effects highlighting the "Cosmic Rewind," time travel aspect of the ride were cut.
Also, as I pointed out, we inexplicably see Eson jump back to the big bang twice - he does so in the preshow (taking Earth??? with him for some reason) and then, inexplicably, in the first scene of the ride, we jump with Eson again.
Also also, we are chasing Eson to track him for the Guardians... who arrive immediately, so that plot point is totally discarded.
Also also also, I know we don't care about the MCU here, but its kind of absurd that the plot of this ride completely negates the first 20 years of films, since if the Guardians had access to unlimited time travel after the first film, the ENTIRE PLOT of Infinity War and Endgame is nullified. This is even funnier because the time travel serves no purpose in the ride!
I don't think we've ever seen a ride where budget cuts and last minute rewrites have made such an incomprehensible mess of a plot. It's another reason you don't do complicated plots on theme park attractions!