At the time of booking we opted for OBC as it was the better option (in total more than the car parking).
So next job was to book the car parking. Now I don't know if anyone else does this when booking CPS but I always put my booking reference in and it usually gets rejected - but not this time. It accepted the booking reference so I have free parking and an invoice that says I have OBC.
Let's just wait and see if anyone notices



