Freedom is a great ship you should be excited! :-D
The kids will have a blast! Most teens love Freedom Classs ships.
Had a promenade stateroom twice. And yes you can watch the parade from the cabin however I did prefer to go out to the promenade to watch.
The time of the Parade will be listed on the Cruise Compass.
You might want to check out Cafe Promenade for sandwiches and pizza.
Johnny Rockets is popular with teens. There is a charge however for JR.
The flowrider is not open all day you will have to check the compass for times each day. Flowrider can get very busy during peak season cruising so expect a wait.
The teens have a Teen deck party one evening and it is alot of fun for them. They use the pools/hot tubs/flowrider for the evening.
There should be alot of families on the Christmas sailing so there will be many teens onboard for your kids to meet.
Must do - Parades, The Quest, 70's nite, Ice Show.
Enjoy your cruise!!!