I don't know about you folks, but I like to keep the ad cards and jokers in if for no other reason than that removing them will create a greater gap between the cards and the box - cards are thin but their thickness is measurable and it can make a difference.  Draw a few cards out and the box is more likely to end up smushed when weight is applied to it.  Isn't it?

It's all on the Ellusionist website, if you look hard enough.

"Air Flow Finish" was the upgraded version of Air Cushion they were using on their cards.  USPC Legal recently decreed that any Bicycle deck that mentions a finish now must say "Air Cushion" regardless of the finish being used.  This came out around the same time they announced that any deck using the Bicycle Rider Back design has to use it in an unaltered fashion, other than color changes - no more gaff cards with altered backs, no more design variations.  It's the reason the Bicycle Brimstone deck came out with a nice but not as interesting back - the original design was Rider Back with demons replacing the cherubs.  It's also the reason any new "Twilight Angels" gaff cards are being released on Mandolin Backs, not Riders.

"UV500" was the card stock the cards were printed on.  The reason it fluoresces has to do with what wavelengths of light the card surface will reflect - apparently ordinary cards aren't the right shade of white to glow under a UV lamp.  The reason Ellusionist stopped using it was that the manufacturer of the stock (the folks USPC were buying it from) jacked the price up by 800%.  Odds are you won't be seeing that stock again on any playing cards any time soon unless it gets sold with a dramatic price cut.  The only other cards I've seen using this stock were the Bicycle Tragic Royalty decks - which is kind of ironic, since the cards are printed with a grey full-bleed background.  Only the white portions of the face cards actually glowed.