On my year old Navigators for the 8-9s I notice that "stormin the Lab" which is essentially free time for computers, games, etc is from 9-10 each sea day morning that lunch and stormin the lab are again from 11:30 - 1:15 on the first two sea days so you might prefer to schedule Rasul at a time when there is a more structured activity.
Looks like the most fun activities such as Captain's corner (get to talk to the Captain) and Regatta racers (design racers made out of soap) are in the 1:15 - 4:30 afternoon timeslot 10-11 in the morning.
But I wouldn't be too concerned. If you're first time cruisers, you may not have as much choice so I wouldn't worry too much about it.