The sea pass is your id card and it opens your stateroom like a key. Flowrider, rock climbing, ice skating and zipline are included. I would say the shows are included and a must do. You should be able to reserve the shows on the app 45 days out. Also, definitely download the app. Yes, if one adult wants to buy the drink package, the other adult in the room has to buy it or if they arent a drinker, then they have to buy the royal refreshment package. it would be worth it having 2 connecting rooms anyway with 4 kids.