are sollux and aradia in the alpha kids session? if they aren't, how will they get there? are they doomed?

Sollux and Aradia are not in the alpha session.

They can get there by moving through dreambubbles until they get to the outer ring and move towards the planets.  Since they are still alive they can leave the dreambubbles unlike the ghosts.

They are not doomed as of yet

~Mod T