Um, now I love a good pun as much as the next guy but aren't the people sitting at that table going to notice that she's dead like rather quickly? Not to mention they got a perfect look at Bond's face and would most likely go running to the authorities.
"I really wish Gia and Claire had became Tanner" - Honeybeefine
Yeah I get that, but the people at the table WILL realize that Fiona is dead and any logical person would tell the authorities and would be able to give them Bond's description. Yeah Bond could very easily prove his innocence, however if he couldn't I doubt M would go through too much trouble to get Bond out of a Bahamian prison (I mean look at what M did to Bond when he was captured in North Korea), and regardless it would significantly impede his mission to stop Largo
"I really wish Gia and Claire had became Tanner" - Honeybeefine
The Bahamas is a British Commonwealth Country, and with a few phone calls from the British government the whole thing would go have gone away very quickly.