You have already booked a trip but want to add something to the booking? That's easy to do and you can do it at any point, even after paying the full balance.
Just sign in to your WeTravel account and go to 'My Trips'. Click on 'Manage Booking'.
Click on 'Add More Options to Booking'.
Choose which add-ons you like and the quantity you need. Choose one of your already saved payment methods or enter a new one. Click on 'Confirm Booking'
That's it! You have added additional items to your booking.