practical question that i suspect affects more people than the advice assumes.
i do not drive. never have. so when people here say the important thing is that you can leave under your own steam, my own steam is a train that goes once an hour and stops entirely at twenty past eleven.
what this means in practice is that every evening meeting has a hard edge on it, and that edge is not chosen by me. if the conversation is going badly at nine i either sit there for another hour or i leave and stand on a platform in the cold. if it is going well i am watching the clock instead of listening.
it also means that if anything went wrong i would be a long way from home with limited options, which is the bit i think about more than i would like to.
for people without a car: what do you actually do? afternoons only? book a taxi in advance? something i have not thought of? i would rather build this in properly than keep improvising it badly.