Camperhawk....Who is Bob?
What we did was everyone e-mailed me their cabin info, names and stuff and then when I was onboard I gave Rich Joseph, the CD the list and he had the invites delivered to their cabins.
Other than that we had arranged our sailaway ourselves to meet each other and know who everyone was before the party (which, as it turned out, was at the end of the first week). We actually were prepared to do the party on our own not counting on the CD, in case he wasn't available.
Good luck and just keep all the personal stuff on private e-mails