I think they will very much have it on their mind and I am sure City are letting them know that our supporters are booking transport and hotels.
On this occasion I feel for the EFL, they are in a very difficult situation, whatever they decide is going to really annoy a lot of people, potentially leading to court action. Lets be honest, it is not the Saints fans fault their boggle eyed manager is a cheating twerp. They have done what we have done and booked trains, potentially hotels, in good faith. If Boro get there they are going to be left with pretty much expensive hotel options due to them already rising due to demand.
It is a nightmare situation for the EFL. What they should have done, in hindsight, is postpone the second leg and got it sorted before that was played. As people are pointing out, a 3-0 win to Boro as punishment at least gives Soutampton a chance to overturn it.