It is necessary to have it anchored as per the instructions, Anchoring this product to the ground is essential to its stability and rigidity. It is required to complete this stage in order for your warranty to be valid.
Yes, you can definitely use a heater inside the closed gazebo. Make sure you follow the manufacturer’s safety instructions. Using a heater will allow retention of heat, a suitable heater by Palram can be found online.
The Martinique / Milano / Monaco / Palermo / Roma gazebo series do not have 2 different tracks, therefore cannot be installed together.
The gazebo can be set up on grass / dirt, however there should be concrete footings to attach the poles to.