Well yes, obviously calling in sick and then coming to enjoy the park is a stupid move. But i've told them explicitly "Hey, my family will be here on October 30th and they want me to go through Haunt with them." I've given them nearly two full months notice that I would like to have that day off so I could enjoy Haunt with family members that I don't get to see often. Given that, I really don't foresee it being a problem with me having one night off, but if it is a problem, then at least I know that i'll be able to scare them as they walk through Urgent Scare.