Will Vampires affect my gameplay too much?

Vampires is my favourite pack, so I definitely recommend it, but then I am a vampire/supernatural fan so I'm probably not the best person for you to ask? As others have commented though, I have been able to easily avoid vampires when I wish to and you can always delete or cure them. Vlad often visits once shortly after you start a new household, but you don't have to let him in and as long as you don't do any vampire related interactions or learn vampire lore then you shouldn't get many if any 'creatures of the night' at your door. I very rarely have had vampire break ins and my main sim IS a vampire. I believe some simmers have had issues with vampires breaking in at venues, but this has since been fixed? I never experienced it myself so I can't be sure. Also I don't believe a vampire can turn your sim into a vampire without your say so. Even if they could though, it would be easy to fix with cheats. Honestly I find celebrities much more intrusive.