Yeah, not quite the easy experience the hype would have you believe. I kinda naively assumed it'd be a breeze - I mean, it's a train ffs? But there's still a lot of tedious queuing, security checks, customs BS, etc. Granted, it's not quite as arsy as flying, there's none of the crap around carrying liquids or slightly oversized rucksacks, and there's less overall traipsing around to contend with, but it certainly wasn't the effortless, stress-free experience I'd naively hoped for, not by a long way.
One Eurostar top tip, which me & my GF learnt the hard way: When you book online, ages in advance, you can pick which seats you want. So we did. And got emailed the booking documents. All fine & dandy. It wasn't until we were queuing up to go through that we realised, on seeing the prints outs loads of people were clutching, that you still had to click the "get tickets" button (or whatever the hell it was) in the email to actually
get the tickets - the stuff we'd be emailed was just a booking confirmation, which for reasons only a bureaucrat could explain, don't count on their own. So we clicked the necessary buttons whilst in the queue - got the tickets ok, but found that cos we'd left it literally till the last minute, we didn't get our chosen seats. Why the fuck there has to be an extra step in-between paying for tickets & receiving confirmation and actually getting the tickets, bugger only knows...
Also, whilst I'm on a Eurostar rant - the trains themselves are fine, the super speedy bit is genuinely quite cool (although sadly it only goes whizzy fast for small parts of the journey), the under the sea bit is the most underwhelming of anticlimaxes... but what really got me was how depressingly tatty the buffet car was. An exercise in 80's plastic with a selection shittier than a late running GWR to Swindon.