Yeah based on my desires, it's either Senor Frogs or just stay on the ship(which I'm perfectly fine with!)
When you get off the ship and go through the main building with all the wonderful cheap knock off crap, you hang a right and just walk down the street. Senor Frogs is at the end of the street. You'll pass a bunch of tents of more knock off crap if I remember correctly. There will be a map in your navigator the day we go to Nassau and it should be on there.
Also I'll note I am 3/3 with these cruises being either stuck in Nassau due to weather conditions or the crew has won awards and gets the ability to stay late. If we end up staying in port later, I know where the crew parties

They check for
DCL IDs I think, but they took one look at my WDW ID and let me in all 3 times, along with my entire party.
Senor Frogs is crazy fun though, especially with more people. I openly invite all to join!