hi mommy lorraine.
i'm not from the south, but i've heard of this place called Raya clubhouse in Paranaque. i'm still trying to find their contact info so we can post it in the supplier's directory.
there's also Palms Country Club in Alabang. they have a nice ballroom.
a little off is Fernbrook Gardens in Las Pinas (similar to Fernwood Gardens). actually i'm not sure if that's still considered Las Pinas or Cavite already. this place is behind ayala alabang village. you need to go through Daang Hari to get there. haven't seen the inside, but the place looks spectacular at night when you are going through Daang Hari.
happy planning!