That happened to me a couple of nights ago.  

3:00 a.m. No idea what I’d forgotten but couldn’t get the nagging feeling out of my mind.

I finally figured it out today.

I had not closed the books on the three weeks we’ll be closed over Christmas.  

Got to work and discovered we already had reservations that week. One for Christmas Eve.

Whoops.  

I got to call and disappoint people.  

Luckily everyone was understanding.

Two of the tables rebooked.  

One table for the Sunday before Xmas.

The other table for tomorrow.