we flew first on UA iad-nrt-iad. no krug and no caviar. i think the meals were very close to idntidcal to biz. the wines were $25-30 shelf priced. the ua global first lounges at sfo, iad, and nrt were nice. the lounge at nrt for ana was the nicest. the beds in first were much nicer than on biz class.

The other thing is the cabin size, fewer pax, calmer atmosphere, more personal approach although that depends on the crew at the time. I think people who don't regularly fly might use it for that special treat, those who can afford it do it all the time. Every time I've flown trans Atlantic (maybe 3 or 4 times a year in F) the cabin's been full.