I tried the Eggs Royale today. It was good, and served promptly (chef must have anticipated demand before the train called at York).
The portion size is small but is in keeping with what you expect from LNER, however it didn't leave me feeling hungry (I am not one for large breakfasts, unless I am skipping lunch). If anyone wants a substantial breakfast, then the full LNER is the best option by far (or maybe the veggie version, but I've not tried that, so can't comment).
No juice was offered on today's run, but that doesn't bother me, as there were 2 x hot drinks runs and both times I was offered water, so that will do for me. I didn't specifically ask if they had juice, so I don't know if it was just not offered or unavailable, but I wasn't fussed.
I don't tend to get evening dine trains, as nearly all my non-morning trains are Deli or, if I am lucky, Dish at best, so I may not get to try the steak. Personally, I would have preferred the salmon from the previous menu, but I never got to try it. It can be difficult for me to find Dine trains at suitable times for the journeys I make.