Before starting with day one I would advice you guyz to buy enough Peso as even at daily stores like 7 eleven and food outlets like KFC in manila they require Cash payments. So get your pockets full of pesos and then Land in this country😛
Once you land make sure you take a Grab taxi in manila as its the cheapest(yellow cabs are the costliest). You need not download the Grab app as the counter is present outside just as you exit the airport.
I would say theres nothing much to do or visit in manila as there are long traffic jams especially on weekends so you could just relax at hotel or maybe go out for a drink. Interestingly the best bars are usually inside the malls🤔 Dont forget to have San Miguel Beer🤓