You're not likely to get one. I was on the 8:10 out of Birmingham and just arriving in Dover. I'll let you know what ferry we get.
Also, no alcohol
There was a coach in front of us that took a while through passport control as some of them apparently didn't have their Vax/Test ready.
Then at security a fella got on and scanned all our passports.
They'd tried to get on the 2:55 but waited for another coach that was having issues.
So we are on the 4:40 Irish ferry which is apparently what we were on.
Didn't help we stopped for 45 minutes less than 20 minutes outside Birmingham at a service station (and it was 40 minutes late turning up).
Be prepared for a lot of waiting about essentially