Dinner treat I missed

I have decided to cancel a dinner treat that a friend of mine offered for earlier this evening.
It would have been a five-course meal at a nice, posh clubhouse with lots of wine - the lot.
This was a promise my friend wanted to keep, as a celebratory thing for my recent achievement.
But I have so much work to do that I could not foresee myself as good company to my friend.
So to be fair, I apologised.
The same dinner will not come round at this clubhouse till a month later.
My friend kindly said the treat will be offered to me again then...