Ferry crossing and driving/rest hours

Hi all, sorry to ■■■■ in on this thread!
i,m having my first ferry trip to Belfast from Birkenhead Tues morning. Looks like there is some really good advice here but would like some help.
i,m going to start my shift at 22:00 tonight and the ferry departs at 03:30 Tues morning. When you park up at the docks waiting for the ferry, do you put it on break at that point or ferry mode then break. Some have suggested you dont put it on ferry mode until you are on the boat.

The ferry arrives in belfast about 011:00 Tues morning then there is a 10 minute drive to where we park up. We wont be starting our next shift until Wednesday morning, (easy life!!)

We are actually taking a week to do 1 days work with 2 nights in an hotel with meals included!!! :smiley: