More common responses expressing surprise in these circumstances cut the nonsense about understanding it is Friday night:
Well bugger that! I’ll leave when I’m good and ready and not before!
Where did you dream that one up, Jimmy? You know where you can stuff it!
or, drawing on another question on this list:
Sod that for a game of soldiers!
However, if ...
If you feel that you have been surprised by information that you should have known about, you could say that you were blindsided by the restaurant.
Merriam-Webster, "Blindside," verb:
1 : to hit unexpectedly from or as if from the blind side // blindside the quarterback
2 : to surprise unpleasantly
Cambridge Dictionary, "Blindside":