Newbie booking activities

[badinnplaid]

Hello all--booked my first Disney cruise for the fall and I'm feeling like a lost and confused newbie trying to book our activities! We are going in a group and have booked four cabins. All were booked at the same time and are linked (i.e., we can see them all under My Reservations). Our booking window opened today, so we went to go book some stuff for the group, but found that when we go to book an activity, we can only book for ourselves. The same goes for my in-laws in the second cabin--they can only book for themselves. Strangely, the other two cabins see each other when they go to book, but not the rest of us. I'm not sure if this matters, but the two that can see each other are Castaway Club Silver, whereas we and our in-laws have no status--would that make a difference even though we're all now in our booking window?

Only somewhat related--I'm sure the answer is now, but on a 7-night Eastern Caribbean cruise on the Fantasy, is there a somewhat standard schedule of the nightly shows? I ask because we definitely want to see the main production shows with our little one, but it looks like based on past Navigators, there's one night where they generally just show a movie. Would love to book Palo or Remy that night but don't know if there's a way to tell that it'll generally be on night 5 or something? Thanks to anyone that can provide some wisdon here!