Thanks all and to Alan who explains everything very well for us all.
The little man is just a happy chap, his face has got spots on it now but he is full of beans so far.
His mum is back to the doctors on Monday to try and get a note saying he is unfit to travel and lets hope the insurance will sort something out.
She went into the travel agents to tell them the problem and the cheeky buggers said if you cancel the holiday now you will have to pay £700 even though its all been paid for. They were going all inclusive so why do they want an extra £700? I wish I was there. Now if she does not tell them anything and just does not show up, its a different matter, its classed as a no show. I wonder if that affects the insurance?
Again, thanks for your thoughts. Yes, a sad time for my daughter and grandson, but happy times for everyone else.