Will Tomb of Annihilation be more sandbox/open world or story driven?

Any advice on prepping Curse of Strahd? Feeling a little overwhelmed…

The party has been captured by Strahd

I’d like to have bullywugs in my Curse of Strahd campaign

One of my players bought Curse of Strahd for me…

Which Van Richten backstory in Curse of Strahd do you prefer?

For Haunted One: is it 1 or 2 skill profs?