> Eurostar St Pancras is dangerously crowded and needs tearing down

Agreed. It's horrific. They need to get rid of some of the shops, knock through, and double or triple the size of the departure lounge. EES has made it even more chaotic.

We do this all the time in the UK - give too much space to retail. You can understand why though - we spend like crazy at airports and railway stations.

I did a first class Interrail earlier this year, not planning much, not staying in hostels. It was quite stressful as unsurprisingly Paris, Milan, Florence etc are popular and expensive places! Trying to chase good weather was annoying as it was a terrible winter in much Europe - we had all this flexibility but didn't want to go anywhere as everywhere was cloudy and rainy.

We ended up abandoning it half way through, when we were in southern Spain during the terrible week of multiple derailments. We aren't religious but we took that as a sign to head home

I'm still committed to trains but I wouldn't repeat the experience. I would base myself somewhere with good trains, stay somewhere a bit cheaper, and do day trips via train