The collaboration will see a series of giveaways across three theme parks throughout summer. 

Running from now until September, customers will receive free children’s entry to Alton Towers Resort, Chessington World of Adventure Resort or Legoland with any purchase made in store. When spending over £50, kids also stay free at the Alton Towers Resort Hotel.
“Families having fun is a core value, so we’re thrilled to be able to offer customers the chance to visit some of the UK’s top attractions,” said Mark Drummond, head of marketing at Hamleys. “Merlin is a fantastic brand offering first class family experiences, which is why it is the perfect partner for us.”
“This is the start of an exciting relationship and we look forward to welcoming families to our attractions as a result of this partnership,” added Max Mayer, senior brand manager, Merlin Entertainment.
To take advantage of this offer, shoppers simply retain the voucher attached to their till receipt and bring along to their theme park of choice.
Additional benefits of the campaign include online competitions, where visitors will have the chance to win family entry, fast pass tickets and overnight trips.