Sure, i thought i was pretty clear with my wording it's not something i want to do. Unfortunately the only way to amend CWOA and Legoland bookings is by phone or live chat during working hours and with so many bookings on top of working and looking after a severely disabled child i was voicing the concern that a mistake may be made and subsequently questioning whether there would be ramifications. And really, whilst cancelling a booking at 430pm on the day is within the rules, it's also of no use to anyone so a waste of all parties time.
As you mentioned the MAP situation i'm aware technically there's a three strike rule and your pass is cancelled for missed bookings (though i don't know how strictly this is enforced), hence my concern for a similar situation with RAP.
I still don't understand why AT and TP have the option to amend online (and avoid this) whilst the other two don't, presumably it's something to do with their digital RAP systems.