I had annual leave approved for end of this month over 6 months ago, to go away for 3 days, and booked the trip the next day.
Yesterday my management announced mandatory training for these dates (as well as 35 other days between now and July)
They made a point of saying if you don't attend these mandatory sessions this will impact your job and you might have to be in training for longer (in my case it'll potentially add 4 months to my training).
I am still going, my leave was approved, I gave plenty of notice and this would inconvenience my partner who's coming as well as me.
They can't expect me to cancel a holiday with 2 weeks notice when I booked it over 6 weeks ago. Would you still go?