You can camp in Badian Island, Malapascua Island and Moalboal. Or if you want chill summer trip with friends on a budget, I'd suggest checking out places in Mindoro. Puerto Galera or Oriental Mindoro have nice beaches that aren't too crowded yet.
tu Lots of beach resorts and homestays to choose from, plus the food is great and very affordable. Travel is also easy,
https://3dtrcek.com/en/filaments/pla-filaments you can take a ferry from Batangas then ride habal-habal or rent a multicab to move around the island. Make sure to leave Fridays and Sundays to avoid traffic. It's about 6 hours total travel from Manila. You can also look into Sorsogon like Matnog or Donsol if you want something a bit off the beaten path. Have fun and enjoy the summer. You can read this guide how to plan your trip perfectly
https://gowithguide.com/blog/how-to-...ial-steps-5730 it will help you place accordingly.