IGN Awakening review, spoiler free
Though the main quest could probably be completed in a few days of focused play, exploring all the side quests and gathering up all the codex entries could take twice that time.
Sounds good to me!

Can someone explain how you port your character from the main game to the expansion? I've played through the game at least six times so does that mean I can only port the character I'm with now, or can I pick from my past characters?