As a former DA, I can answer this. You have a choice of wearing a hat or a hair net in the galley, cooks, bakers, DA’s and anyone who steps into the galley.
Yes, bring an alarm clock. Rooms are sparsely furnished with a bed, wardrobe, small chest, fridge, desk, a straight chair, maybe a lamp, and a set of sheets, a wool blanket, a pillow and a comforter/bedspread. You may want a small hot pot. Some small items you can skua when you get there.