The routes that I'm going to share going to certain places are the one that I've already tried. Other than these routes, I am not fully aware of others.
Going to Enchanted Kingdom is pretty easy. From Gil Puyat (formerly Buendia) corner Taft Avenue ride a bus (Jac Liner) going to Balibago. Got off at Waltermart Sta. Rosa. The conductor will usually shout the place ( Waltermart, mga papuntang enchanted diyan). From Gil Puyat travel time up to Waltermart is about 40 minutes depending on traffic situations. The fare is 61 Php. From Waltermart ride a tricycle going to EK. Fare is 40 Php for special trip. I am not sure how much is the normal fare. The tricycle trip is only about 5 minutes. And there you are at Enchanted Kingdom. Enjoy your day and let the magic stays with you.
After the adventure at EK, to go back to Manila, you can wait for a bus in front of Waltermart. But buses are usually full and you will be standing for a long time. If you don't want that, you can ride tricycle again going to Balibago terminal to be sure that you are seated for the trip. Special tricycle trip cost 40 Php.
Bus and tricycle fare is of November 2013. Please be ready for possible changes.