Personally I think this is quacking to prevent you from attending. He doesn't have any interest in "seeing what Alanon is all about", he just doesn't want you to go. Active alcoholics are terrified of facing their addiction, and he is worried about having a mirror held up to his behavior. If he even remembers this and is awake when it's time for the meeting tell him....well, anything really. No is probably the best and most concise response, but anything you think of will be fine. Don't let him stop you from doing this. You know you need this respite. Nine days? Ugh, I feel for you. I remember my ex's multiday benders. They were always a nightmare. By day nine I would have been ready for him to get hit by a bus.