It's called choice of law. Happens in US courts all of the time, parents enforcing an out-of-state divorce court parental agreement after they moved, two people

It's called choice of law. Happens in US courts all of the time, parents enforcing an out-of-state divorce court parental agreement after they moved, two people from Ohio who got into a crash in Indiana... us enforcing in Florida, a commercial contract drafted under new york law, just some examples of where a court would use law from a different jurisdiction. Bahamas don't need to send their own attorneys if they don't want to... they aren't necessarily a party to the case. Here, FTX is opting to have a US disposition of the Bahamian bankruptcy code, so what would Bahama have to send attorneys for? In this case, its still adversarial between the creditors and FTX, so there will be parties arguing for the correct application of law.