Wow, that's unbelievable. So if you have a group of 7 people going for a pre-paid meal, your only choice is to book and pay for 8?!?
I would still like to give CM's the benefit of the doubt & assume that the entire ADR was cancelled just because of a miscommunication. That could have easily happened with my asking to remove one person from our party if I wasn't clear in what I wanted. But for booking the original - yep. I had to book & agree to pre-pay for 8 if I wanted 7 at the table. To me and my odd numbered family, that's crap.
Keep in mind this is only one experience in one restaurant. I booked plenty of ADR's for that trip for our party of 7 including SOA (also prepaid) and only had trouble with CRT.