Bottle feeding in shopping mall

Yes, you may if there are seats outside the cubicles. Cubicles are prioritised for direct latching mothers. Or you can bottle feed in the cubicle with door open and give away the cubicle when needed. I had some experiences with that.

Yes but usually will not occupy the nursing room as it is limited. Will let nursing mums use it instead. Bottle feed i will do it at any public seating area

Yes.