Couldn't care less what is optional really. None of it is included in my course fees at all, as it is at most other universities, which is a piss take. Anyway, £15 for me, 3x£6 for guests and £45 for robe is £78. In my opinion, I shouldn't have to pay to attend at all, and my robes should be included, and 2 guests should be free. Any more guests than that and my photos should be paid for I agree, but paying for robes that are mandatory? f**k off!