Insulation

Hi - just wanting opinions on whether to put insulation batts in internal walls? We have them going in the ceiling but didn't consider the walls, wondering if we should add. We have reverse aircon going in and a wood fire fireplace and also a ventilation system that will help redistribute any heat in the roof space back into the house so thought we were covered with heat and cooling. Considering putting acoustic batts in the wall between the main bedroom and kitchen to cut the noise. Any advice?

most project home builders will offer you a 3 room deal with Bradford soundscreen batts if you ask them. Generally not that expensive, and will go a little way to muffling and quieting the noise from room to room, but by no means soundproof.