Was here yesterday albeit a little earlier than last week on my outbound (got there about 3pm vs 4pm). Was able to get a table straight away and had same meal as pictured above last week.
Was then able to find a place to sit pretty quickly until my EWR - RDU flight left. By the time I left the lounge it was completely packed.
It did not appear that they were serving Lanson yesterday although I only got a glass of Prisoner and wasn’t looking for any bubbles so they may have had some in a different part of the bar — they do seem to differentiate between some specifically asking for champagne and just asking for bubbles in general or a mixed drink (like a mimosa) where they use Prosecco. I observed the latter at the UC in London as well