[MarinaNova is putting on quite a show. As soon as the artificial sunlight dims and the projections begin, Chekov flops on the ground--sufficiently out of the way so as to not be underfoot, thank you--to observe. Anything that's important enough to put in the sky is important enough to pay attention to, yes?
Saint Petersburg, Taganrog, the view of Earth from the Luna colony, Starfleet Academy, the corridors of the Enterprise, the expansive house he occupied when he was in the City... they're all there, static pictures projected on the dome--every place Chekov has ever called home. It's nice to see familiar places, even those that he knows he will never revisit. There are memories attached to all of them, good and bad alike, and Pavel has developed a talent for visiting memories without being mired down by the emotions associated with them.
He's having a fine time until the dome shows a starscape: the sky as seen from Earth's northern hemisphere during the autumn months. It's simultaneously achingly familiar and unsettlingly foreign. He knows the major constellations and stars--has trivial information about all of them stored away--but his memory of the whole is gone. One particularly harrowing event in the City had necessitated personal sacrifice, and Chekov had given up his memories of Earth's night sky. Since such knowledge isn't called upon every day, he can sometimes forget about what is no longer in his head. With what was erased right in front of him, forgetting is impossible.
By the time the projections fade into an alien starscape, Chekov is in a contemplative mood that lends itself to sitting on the beach rather than dancing.]