There are several ways in which you can book an add-on:

1. Go to the booking overview in the app or on the website (My bookings) to view your hotel booking and select your add-ons.
2. A few days before you are due to check in, you will receive an email with information about your stay. You can also book add-ons here.
3. If you are not a member, you can visit the Find your booking page. Enter your booking number and name and view which add-ons are available to you.