Vampires cannot complete Outdoor Retreat's Aspiration

Just tested it. It's not impossible. Their needs just need to get super low. So unless you have one of these super vamps who don't need nothing you can still complete it, otherwise you should maybe reskill them. I don't think this is intentional, but I hope this is a workaround for you, at least for the time being.

http://i.imgur.com/fSyddzn.jpg