I offer continental breakfast only which I layout the night before, definately I do not offer a cooked breakfast .... too much red tape with the local council and kitchen inspections.
I see that one of your feedback is "we can cook breakfast in kitchen" ... no matter what, they will help themselves to everything and if they want their moneys worth they WILL have everything.
Unfortunately in your listing "You will have access to help yourself to your breakfast goods only - bread (toast), jams, butter, cereal, eggs, fruit juice, milk, tea and coffee." ... breakfast goods will mean ham, cheese, salmon, caviar, and the full works. ... =:-(
I would take more control and be hands on when they have breakfast. My times for breakfast is 7.00am to 9.00am and am strict on those times, I am there to serve breakfast, make tea, coffee and the toast and thats it. 9.01am and the table is cleared.
Opportunists still arrive, not often but when they do then I find the fruit basket in their room is emptied, tea, coffee and milk sachets are taken and anything else that they feel is fair game, they will have. (Including the spare toilet roll)
After a time I have learnt not to be over generous, but supply enough to keep them happy.
Good luck