Question thats maybe been covered before.
Since I installed Dawnguard, does that mean ALL my character lv 10 or higher will have vampire attacks even if I DON'T start Dawnguard? Some of my characters are so deeply involved in other quest lines I'd have to see them ruined by random vampire attacks killing my quest marks.
If I don't start dawnguard, like visit ft dawnguard will I be safe from attacks on those characters?
Not necessarily, Aussie was in the mid 50's when she started, completely ignored the Dawnguard hints and continued exploring, went up about 5 levels before she finally decided to join the Dawnguard. Never had an attack on any towns till she joined the Dawnguard. Had random attacks in the wilds by vampires or vampire groups pretending to be other things.
Braggen who was around level 75 and had done all the questlines, was attacked in the first city he entered, he just got to hear about vampire attacks and bam! Instant attack. He immediately decided joining up might be an idea.
Rork the Ork wimp was around level 11 when he started Dawnguard, went all the way up to level 21 and never set eyes on a vampire in or out of towns, he has heard about the Dawnguard reforming, but is not interested at the moment being busy with other questlines. Due to his cursed luck he is demoted to level 16 at the moment, since someone was not paying attention to what saves were being overwritten. But still he wandered off doing some of the main game quests, and nothing with fangs jumped out and attacked any where.
I have no idea how they work out who gets what attacks where, some say they had their first attack at level 10. it seems two of mine would never get an attack without actually joining a faction, and one was a high level character. True she never actually completed anything but the Stormcloak campaign, but you would have thought that would be enough to get some attention. She got a lot of attention once she joined the Dawnguard, but the only walled town that was attacked was Windhelm. Small towns, Orc Strongholds, in the wilds, almost every time she went to Windhelm before starting Touching the Sky she would be attacked. But no matter how many quest she did in other walled towns or how much time she spent there looking for trouble, she never got an attack on any other walled town. Braggen was a vampire and got them in every walled town except Solitude, he only went there once after starting Touching the Sky if he had gone before starting the quest for the bow, I would think he would have had an attack on Solitude as well. He got no where near the amount of vampire attacks Aussie did though.
There would probably be a pattern to how it is determined who gets attacks, but you would need to collect a lot of data to work it out.