Cancelling a Booking - very short notice

Tomorrow, Saturday we're booked in for a one night only at a site about 60 miles away, it's our third booking so far since joining.

However, there is a problem which is of my own doing, when getting the documents together, booking form, checking insurance etc..well I realised the MOT of my vehicle expired 2 days ago and I seriously doubt I will be able to get the car in to the garage tomorrow morning and even if I could there is no guarantee it would pass.

In essence, I am not comfortable with driving to the booked site for our Saturday night stay with a vehicle that has no MOT etc etc.

So, I will have to cancel the booking which is something I'm loathe to do for a number of reasons

A/ It's not the sites fault I am unable to get there, it's mine.

B/ I don't want a black mark or one of the three marks (it might be two, maybe someone could let me know which) for not turning up ..

So I'm either going to drive to the site in my other car (no towbar unfortunately) and pay the fee to them for Saturday night or am I right in thinking that if I rebook another site/same site within 24hrs of me cancelling that no mark/letter from the caravan club will be on it's way and all will be well?

I'd like to think we have an unblemished record and would like to keep it that way etc.

The site we've booked is available next weekend also for the same night (just checked) so was going to rebook anyway.

Any help/policy preocedure advice would be most appreciated.

Thankyou!