I'll be travelling on this just before easter, and similar to what some others have seen: I didn't get the berth selection screen (I was told "reservations automatically applied"), and I didn't get a meal booking option either. This could just be a busy train since its around easter. Price was a whopping GBP 240 but I luckily discovered I just scrape into eligibility for the 16-25 railcard which brought it down to GBP 160. Given that I'm on holiday, and would otherwise need a hotel + flight and a train, I can't really complain.
Doing a test booking on a different day closer to now, and I can select both a berth and meal...
(I got a first class ticket since that's the only option when travelling alone, and got given a berth right over the bogies, I was under the impression that that wasn't supposed to happen but oh well.)