You were told you were going out on the engagement, you packed for a fortnight, and the fortnight became six weeks. You are in a client's building in London with four people from your own firm, two of whom you had not met before the kickoff. The days are accounted for down to the half hour. The evenings are not accounted for at all, and there are a lot more of them than the planning memo implied.
This is the specific shape of working away on an audit engagement: you did not choose the city, you did not choose the team, you cannot predict what time you will finish, and there is a date in the future after which none of it exists any more.
You already spend fourteen hours a day with these four people
The engagement team is not the answer to the evening problem. It is part of the evening problem. You are in the same room from eight in the morning, you eat lunch in the client canteen together, you walk out of the building together, and by the time you reach the lobby you have run out of things to say to each other that are not about sample selection or the outstanding items list. Going for a drink with them is not company. It is the same day, continued, with a beer in it.
There is a second layer people rarely say out loud. The senior on the job reviews your work. The manager writes you up. You cannot be genuinely off duty in front of the person who signs off your performance, and pretending otherwise is why the third team drink of the week feels heavier than the first. It is not that they are bad company. It is that they carry the job into the room with them, because they are the job.
So the useful evening, the one that actually resets you, is the one with people who are not on the engagement. That is the whole of it. Not a better bar, not a different restaurant, just a table where nobody knows or cares what stage the file is at.
Busy season makes the hours unpredictable, not only long
Long hours you could plan around. It is the unpredictability that stops you committing to anything. At four in the afternoon you do not know whether you are leaving at six or at eleven, because it depends on when the client sends the schedules over and whether the numbers agree. So you commit to nothing, which sounds sensible and produces a bad outcome: the nights that do finish at seven get spent in the room anyway, because there was never a plan for them either.
The workable version is not a weekly commitment that you will break. It is a small number of evenings booked in advance on the nights you can actually predict, accepting in advance that you will lose one or two of them to the client. Two booked evenings a month, of which you make one and a half, beats an open diary that fills with nothing.
It helps to know what happens when you have to drop one. On KF.Social, if you cancel before the venue is confirmed at 72 hours you get a full refund to your card. If you cancel after that but more than 24 hours before, the fee comes back as points toward another dinner. Inside the last 24 hours the roster is locked and there is no refund. Knowing all three of those in advance is what makes it reasonable to book at all on a schedule like this one.