Get yourself a cab--IMMEDIATELY.
Singapore has probably the best food I've ever eaten. Get yourself to the food court at Lau Pa Sat or Newton Circus. If you go to Lau Pa Sat, you can then walk over toward the river and see a bunch of teeming bars. Even if you don't go inside, it's still worth checking out.
Trust me, it's much better than BK. And $50SG really isn't that much in the grand scheme of things.
GO DOWNTOWN NOW!!!