Our part time nanny took my disabled 4 year old and 1 year old to Chessington today. I said she could use our annual pass to take the children there anytime she wanted and last week she told me her 24 year old son was going to go with her to help her, to which I replied, "That's nice of him". She came back with a bill of £47.50 for his ticket! If she had asked me in advance I would have told her not to take them if me paying for his ticket was the deal, the annual pass was only a few quid more than his ticket and was a birthday present from my mum. I feel there isn't much I can do now it's done, other than not let her take them there again :(