They don't really want your opinions. Also don't believe that it is confidential. They know who you are. Once I made a comment that upset management and they allowed the OP to respond back to me and I really wonder if my confidentiality was violated. No way to know for sure, but I suspect it was.
Again these surveys and town hall meetings are about pushing their agenda, not your concerns! There is a reason they left so little space for comments. Be aware if you speak out especially at a town hall meeting and are critical of something you may make yourself a target!
If you work for a reputable hospital system they will already have policies in place for nurses to offer suggestions and improvements. Shared governance is the gold standard, but whether it works depends on management culture. Does your hospital system truly value quality, safety and staff morale and retention or do they just offer platitudes, surveys, etc while being solely driven by the bottom line. From what you've said, I suspect it is the latter!
The clues are screaming out, broken equipment not being fixed, shortages of vital supplies, cutting your PTO. So unless your hospital is in dire financial straits; which is another issue entirely, you have your answer!
I know this is a heated response but I'm tired of rise of these profit driven corporations that are ruining nursing, demoralizing staff while decreasing patient safety and quality!