One way or the other they have to make a choice. I will note even if Astarion sucks your blood, you wake up refreshed with all your spell slots so it doesn't seem so bad. The only real danger in camp is if that moron Gale gets knocked off a cliff and falls through the abyss into camp.
You can get attacked in the camp on the evil path on two occassions. So it's not completely safe.
