If I go out and buy the season pass, are the booster packs included in this or do I have to buy them separately?
Do you mean the car pass?
I believe I do.
Booster is sold separately from my understanding.
The Booster Packs are included with the Car Pass:
http://forums.forza.net/turn10_postsm15097_FM5-Cars-and-DLC-list.aspx#post_15097
Ah, sweet thank you.