Doesn't seem that likely to me. 90 years is a long time to plan for. I would assume that these people all signed agreements saying that they understood the risks and if things go wrong, that's too bad. You have to assume with a mission like this that they wouldn't do it unless they were sure it would succeed as intended.
Maybe they have Star Trek type technology, replicators or something. You'd only need one replicator to provide for two people.
Yes, I actually made that comment earlier.