I am extremely sceptical that this offer is for real. I have been checking the booking site regularly. Before the under 7's free offer was announced, I was pricing and monitoring the price of a particular stay. Then the offer was announced, and the discount evident on the site. However, the overall total price did not change one cent. I called to enquire and they had no explanation even though I had print offs to prove this.
Recently I enquired about a family room at Newport Bay. I was given a price for 2 adults and two kids, but when I added another child (presumably free to stay and play), the cost went up by 700 euros! Again I queried, but was told this was because the room was slightly larger than the average one. A lot to pay considering the child was supposed to be free...again, no rational explanation.
I am starting to think they simply increased the cost of two adults to encompass teh cost of the kids....