I'm really warming up to gaminwench's idea of setting up buddies, even if its one vet to a handful of virgins, and pushing each group of virgns to be as independant/self-sufficient as possible -- with the main group right there for advice and help when they need it.
I think "one vet to a handful of virgins" is great, even better than 1-on-1 buddies.
A small circle of virgins for each of 4 or 5 truly extroverted, interested "social hub" style veterans might be advantageous, because 1-on-1 means there is actually a strange pressure to be a person's "everything", whereas someone who has several lesser charges--well, there's the automatic realization that they will have less time and you're expected to step up to the plate.
Also, not everyone is cut out for being a guide even if they're experienced and nice, whereas some people really enjoy it, and & can send a person on their way with enough info to deal. Others, alternatively, may take on too much/not know when to say "no" and then quietly resent it & not enjoy themselves. I've seen it happen.
Encouraging the virgins to be self-sufficient is key, agreed.