Rudman,
 
document.addEventListener('DOMContentLoaded', () => {
    document.querySelector('.order').addEventListener('click', () => {
        document.getElementById('tick').innerHTML +=
            `
      ${ document.querySelector('#city').value }<br><hr>
      ${ document.querySelector('#date').value }<br><br>
      ${ [...document.querySelectorAll('[name="n"]:checked')].map( el => +el.parentNode.textContent) }<br><br>
    `
    })
})