It was like nothing Hermione had ever seen before. Certainly, she felt less self-conscious in her own attire. People were wearing all sorts of revealing costumes, many far more exposing than her own, and some were simply wearing nothing but a collar. She kept her eyes down from meeting anyone else’s as she glanced at the other collars. There were some who wore just a collar, others, like her, were collared and leashed. There were many others without collars - some with collared partners, others apparently alone. Those wearing more suggestive clothing were certainly getting a great deal of attention from other uncollared visitors. She noticed that, like her, all the collared patrons and especially those with leashes were given a wide berth by other guests. She was grateful that Snape had thought of that, she didn’t want to be pawed at by random strangers. She gasped at a light tug in the leash and her eyes snapped to his face. He was observing her with amusement and curiosity. 