I've come to expect the inconsistency as part of the VS way of doing things. (Sad but true)
I have been AU for 5 years and normally fly business routes to SFO, JFK and last week to HKG. Most times there is a name check on the door bur no welcome back, which is fine by me. Very rarely on these routes does anyone say or do anything about my status (I'm generally in Y or W).
Twice in the last 40-50 flights when I have been in economy or PE, I have been given a glass of champagne and a thanks for being a regular, which was lovely to receive. However, when I now see the crew coming down the aisle with a tray and a couple of boob glasses - and then they walk straight past me - I feel just a little bit miffed. I don't expect it, but I know how good it feels when they
do do it.
However, earlier in the year I flew to St Lucia in PE, and on both the outbound and inbound flights the crew the made a point of coming up to me and welcoming me back and having a chat. Indeed on one leg, they were so keen, that two separate crew members did this, much to my wife's amusement.
My interpretation is that on business routes there are loads of us AU's so its too much trouble to have that chat with 10 or 20 people, but on the leisure routes, where I assume an AU is more of a rarity, they like to do it.