gift-card-customisation.html

<style id="hide-choose-num-tickets-style-tag">
  section.choose-num-tickets {
    display: none;
  }
</style>
<script>
  window.onload = () => {
    let chooseTicketTypeHeading;
    let numberOfTicketsButton;

    const isGiftCardBookingPage = window.location.href.includes("/book/199G2-gift-card");
    if (!isGiftCardBookingPage) return;
    attemptCustomisation();

    function attemptCustomisation(retryCount = 0) {
      if (!loaded()) {
        retry(retryCount);
      } else {
        applyCustomisation();
      }
    }

    function loaded() {
      chooseTicketTypeHeading = document.querySelector("#best-available>ticket-type>left-right-title p");
      numberOfTicketsButton = document.querySelector(".num-tickets-container .choice")
      return Boolean(chooseTicketTypeHeading && numberOfTicketsButton);
    }

    function retry(retryCount) {
      retryCount += 1;
      if (retryCount > 50) {
        cancelCustomisation();
        return;
      };
      setTimeout(() => {
        attemptCustomisation(retryCount);
      }, 200);
    }

    function cancelCustomisation() {
      document.getElementById("hide-choose-num-tickets-style-tag").remove();
    }

    function applyCustomisation() {
      chooseTicketTypeHeading.innerText = "Choose Gift Card value";
      numberOfTicketsButton.click();
    }
  }
</script>