For such a long trip, the only logical ship type would be a self-sustaining generational colony ship full of hundreds of people. The concept of 'home' would quickly shift from being the Earth to being your ship, so staying in contact with your origin planet would become irrelevant.
We the viewers follow high ranking officers on a capitol starship. Surely this cushy position comes with a well equipped post on a vessel that has a good number of such units. Enough so that Voyager had the meme of holographic crewmembers. I don't know if RedDwarf (Rimmer) or some other scifi show got there first.
Presumably a bunch of people could book sessions in one simulator at the same time and simulate multiple simulators inside the simulation, massively increasing the capacity of the top-level simulator.
Why do you need a self-sustaining generational colony ship to go 30 years? Especially in the space future when we should be able to slow aging down at least a moderate amount.
