Captain Defenestrator

Chosen answer: He did it to simply make himself vomit, which is what he does into the sink. Inducing vomiting is meant to rid the stomach of the poison that hasn't been absorbed (although this idea is debatable, Bond thought it was wise). However, he was still in danger because he already absorbed enough of the poison, which is why he goes to the car and injects the antidote (the injection he gives himself in the neck).

Bishop73

Answer: Thiopentone Sodium, Sodium Nitrite, and Sodium Thiosulfate are the most common chemicals used to treat cyanide poisoning. Cyanide might've been Bond's first thought, and he was ingesting large quantities of sodium to try to stave off the effects.

Captain Defenestrator

Answer: If Le Chiffre is willing to torture Bond to get the code, he's certainly willing to torture the banker into letting him use it.

Captain Defenestrator

Answer: It's reasonable that the Swiss banker would have dispensed the money to anyone with the account number and code, just like how Swiss bank accounts can be accessed with just the number and why you keep it safe. Their "different" security is what makes them so useful to some.

Answer: For time. For American TV, a film needs to have a run-time in increments of 45 minutes (An hour with 4 commercial breaks.) Casino Royale runs 144 minutes, so 9 minutes have to be trimmed somewhere, and this scene IS a bit drawn-out. We know Bond's going to survive because the game isn't over.

Captain Defenestrator

Answer: From the novel: "Three measures of Gordon's, one of vodka, half a measure of Kina Lillet. Shake it very well until it's ice-cold, then add a large thin slice of lemon peel."

Captain Defenestrator