Well, if there's a hard Brexit, I imagine we'll immediately see disruptions and other changes at airports, ferry terminals, and other points of entry to the UK.
Yep, although a 'hard Brexit' as such is off the cards (in fact it's a term I've not heard for a while) , it's currently either going to be crash out or delay/stay in.
If we crash out then problems at the ports will be immediate, airports less so as flights stop at night, but there might have been cancellations earlier in the evening. The UK border too will have something happening straight away
Next day there will potentially be plenty of news angles - car plants and other industry grinding to a halt as their Just in Time supplies dry up, how the financial centres are affected, traffic congestion in Kent, panic buying in supermarkets etc