To travel long distance for work Christmas meal in Omicron times?

[Dappled]

I started a new job this year, everyone in the company is working remotely due to Covid but with plans to carry on with this arrangement long-term.
I live a couple of hundred miles away from virtually everyone else. The others worked together when the company was office based or at the very least have met colleagues in person.
There's a Christmas meal planned in a restaurant, in the city where most people live. I've been planning on going. The plan is to travel down by train and stay overnight in a hotel, coming back by train the following day. I've been looking forward to the chance to meet people and to hopefully feel more closely bonded with my colleagues, as there is definitely a negative to starting in a new job where everyone else has met each other, except me.
But should I still go with the rise in Omicron cases?
My plans, until today, have been still to attend. I'm double vaccinated and have had the booster (although I think too recently for the booster to have any protective effect). It's a condition of attending that everyone does lateral flow tests on the day and I'd be wearing a mask on the train and taking usual Covid precautions.
But, on the other hand, it's not in any way an essential journey. It's sitting on a train for 4 hours each way and sitting in a restaurant for several hours with 20+ non mask wearing people.
A few colleagues have pulled out, but most people are still planning on attending. However, everyone else lives close by, no one else also has the long journey on public transport to consider.
So, would I be being unreasonable to still plan on attending?

My work do has been completely cancelled, 20 colleagues working in the same office, restaurant 20 metres from work and 20 minutes from home. I'm relieved.

I wouldn't travel 8 hours on a train plus overnight hotel costs for a work meal in normal times, there's no way I'd do that now, and I'm reasonably relaxed about it (as in no point getting myself worked up any more rather than covid-denier/antivax).

Going forward, are they 100% happy that you live 200 miles away from the office?

I'd still go.

Completely up to you if your manager hasn't cancelled it.

I'd go. You are taking appropriate precautions. It's a good chance to meet your new colleagues.

I suppose if you have any health concerns or are meeting your granny directly afterwards I might hesitate. But otherwise id take the opportunity whilst you still can.

I’d go! Do a lateral flow and crack on

@Fuuuuuckit, I half-wish they'd cancel it then at least the decision would be taken out of my hands. I'm finding it very difficult to know what to do for the best.
To clarify, the company are paying for all travel and accommodation for me, so the personal cost to me isn't an issue in my decision-making. (I know the restaurant and hotel bookings are refundable even close to time. I don't know about the train, but my employer did reassure me when we booked the travel and accommodation that if I felt I needed to pull out because of Covid fears even very last minute they would completely understand).
In terms of the distance from office long term, yes I feel confident they are 100% happy about me living far away. There are a handful of people who actually live further away than me, but they have worked there longer and so those who are based in the UK have met colleagues already. Essentially they are a company who started off with an office based in one geographical location, plus with a few remote employees, but who have realised due to Covid that remote working suits the whole company very well and so are changing their working model. It's just that most people joined the company when they did have one geographical location and so they worked together at that point.
Really, it's more about my desire to feel bonded and "fit in" and get to know people more, as the group as a whole already know each other well.

I'm going to my work do. We are all triple vaxxed mind you - I was last to have it as youngest and that was over a week ago. I'm driving though as I didn't fancy 2 hours on buses to go 15 miles

Your reasons for wanting to go are valid - bonding with colleagues and getting to know people makes a job much more enjoyable.
I would go