You got 8 people in your group. Changing some stuff will definatly be needed by default, I think.The adventure is Curse of Strahd, and I particularly hate seeing Strahd go down with a whimper. I do have a souped-up version of him that I was planning to use, but the fight would be more exciting if the PCs didn't have ALL of their tricks.
The reason he can't come to the PCs right this moment is because he's currently getting married. (My campaign is deviating pretty far from the book in some ways.) Not to Ireena--she's being played as a PC--but to Esmae Amarantha, who spent last year's campaign transforming herself into the likeness of Tatyana. He also has a hostage: Ireena's brother Ismark, who has already been bitten twice. My plan was for Strahd to spring a surprise during the ceremony: He'd bring out Ismark and threaten to have Esmae give him the third bite immediately before the congregation unless Ireena agreed to step forward and marry him as well. However, once the PCs got into the castle, they made a beeline for the crypts, which they spent a whole session systematically looting one by one. When Cyrus Belview came down to say the ceremony was starting, the PCs gleefully shoved him into the tomb reserved for Ireena, shut the door, and went back to looting.
Important note:, But the reason I left it vague is because I'm not so much looking for mechanical suggestions on how to make things more challenging ... yet. I have a few ideas about that, but I'm debating myself philosophically as to whether I even should try to make things more challenging, or whether that's just me trying to get in the way of the fun the group wants to have.
Strahd had no issues with this at all?However, once the PCs got into the castle, they made a beeline for the crypts, which they spent a whole session systematically looting one by one. When Cyrus Belview came down to say the ceremony was starting, the PCs gleefully shoved him into the tomb reserved for Ireena, shut the door, and went back to looting.
Yes you should try. On at least one encounter.Important note:, But the reason I left it vague is because I'm not so much looking for mechanical suggestions on how to make things more challenging ... yet. I have a few ideas about that, but I'm debating myself philosophically as to whether I even should try to make things more challenging, or whether that's just me trying to get in the way of the fun the group wants to have.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.