Anyone due to travel Jubilee weekend?

Hi all, due to fly on Sunday 5th June, just after the Jubilee bank holiday. I’m guessing they will be shut on Thursday 2nd and Friday 3rd? So how will this work in relation to the 2 week upgrade service? I’ve heard they call 48-72 hours before you’re due to travel but that will land on the bank holidays. So stressed! Any help would be greatly appreciated. Thanks x