Date ideas under PHP 12k?

Hello! My gf (25F) and I (25F) will have our anniversary in September. Napag isipan namin mag-ipon ng budget. Naghuhulog kami ng 1k per head per month and we're expecting na in August, we'll have a total of 12k.

Any recos po kung saan kami pwede pumunta or kung ano pong pwede gawin? Near Manila and Rizal po sana since dito kami malapit. Any ideas will do, wag lang siguro yung so much physical activities since my gf is not that active due to health reasons. 😊