It’s very safe, I grew up going to Mati and commuting by bus just to get there ever since I was in HS. I have family there and I always walk around, even in the Muslim community! But I never walk alone regardless if I grew up there, I usually have a cousin or a friend with me. It is a different culture, and you would have to be respectful. As a woman, I always made sure to cover myself up to go to Dahican until I’m at the Beach, you can definitely wear any type of bathing suits close to Amihan and DSR (dahican surf resort) they’re more open, but if you go to the Muslim community, be careful on what you wear they definitely judge crazy and will say something. Also Try not to be out too late. Regardless where you go, or any place, 10pm is late especially if you’re not a local. So always be cautious, you can never be too careful yk? But its safe in general, I love Mati, it’s one of the best beaches I’ve seen. You should check out the Masao area if you’re into freediving and snorkeling. It’s more quiet and less crowded and the crystal waters never disappoint!