Is the minimum Daily Double wager still $5? That gets mentioned almost never.
I don't watch the show every day anymore but I'm pretty sure there was a case earlier this year where a $5 wager was made on a Daily Double.
Most shows (Including J!) that don't allow players to buzz in until after the question is fully read rarely mention that rule, if ever. Honestly, I think the only reason why I knew about Jeopardy's early buzz-in delay penalty was from first person accounts who played the game.
Did Card Sharks require contestants to explain their predictions before giving their answer? I don't think I ever heard a CS host tell a player flat out to come up with a one- or two-sentence answer before giving a number of a higher/lower answer...sometimes the hosts had them expound on their reasoning, but that was at the host's discretion.