For island hopping having your own wheels gives you way more freedom than waiting on jeepneys and tricycles, especially if you want to reach the less touristy beaches and viewpoints. Bring your passport, a valid driving licence from your home country, and an IDP is a good idea just in case. Roads vary a lot, main highways are fine but once you head into rural areas expect bumps and the odd pothole. Browse the listings on this site to check the options and rent a car in the Philippines
https://getrentacar.com/en-US/philippines .