Above is a link to all the info on that group cruise.
To take part in the amenities, like the shipboard credit and our CruiseMates cocktail party, cabin door magnets, etc. you have to book with the agent that is handling that group for us.
We also do group dining assignments for those eating early and late, and plan some other social events onboard as well.
However, if for some reason you chose to book elsewhere, and get onboard I'm sure there will be some social event you can attend and meet the group.